• Emergency Care Center

    Emergency medical care is one of the highest priorities at Hiroo Hospital. The Emergency Care Center handles serious cases from the Tokyo metropolitan area of Shibuya, Meguro, Shinagawa, and Minato wards, as well as the Izu and Ogasawara Islands.
    Since its establishment in 2002, the Center has maintained a high acceptance rate for requests through hotline calls from the Tokyo Fire Department. The Center accepts patients with severe trauma and burns, as well as drug overdoses and acute abdomen emergencies, and facilitates a smooth transition from standardized early comprehensive diagnosis at the Center to specialist care.
    The emergency care service for isolated islands not only accepts patients via aircraft of more than 200 cases per year, but also provides diagnostic aid through an image transmission network updated in 2005 and dispatches emergency doctors. As the Core Disaster Base Hospital, the Center conducts Mass Casualty Life Support Drill and CBRNE Disaster Drill every year.

    Emergency Care

    The Emergency Care Department was established along with the establishment of Tokyo ER Hiroo and treats primary to tertiary emergency patients for the safety and security of the citizens of Tokyo as a new organization providing comprehensive emergency care in coordination with the Emergency Care Center.
    The Emergency Care Department provides primary care for primary and secondary emergency patients, mainly at night and on holidays, with three full-time doctors on duty from the fields of internal medicine, surgery, and pediatrics.
    Since the Emergency Care Department provides emergency management rather than general practice, treatment mainly consists of first aid and the order of seeing patients may change depending on symptoms. If specialist treatment needs to be continued, the patient may be transferred to another hospital depending on the bed status. However, doctors from 11 different specialties and duty doctors from the Emergency Care Center are available for backup and provide a high standard of medical care for emergency patients.


    The Hematology Department provides chemotherapy and radiotherapy for hematological malignancies, such as malignant lymphoma and multiple myeloma, and also provides diagnosis and treatment for a wide range of blood diseases, including myelodysplastic syndrome, aplastic anemia, pernicious anemia, and idiopathic thrombocytopenic purpura.
    Feel free to consult us or obtain a referral to be examined by a hematology specialist if your health checkup points out abnormal blood test results or if you have persisting anemia of unknown cause.

    Diabetes and Endocrinology

    The Diabetes and Endocrinology Department provides medical care for diabetes mellitus, hypoglycemia, dyslipidemia, hyperuricemia (gout), obesity, metabolic syndrome, hypertension (particularly secondary hypertension), and endocrine diseases.


    The Gastroenterology Department handles gastrointestinal diseases, as well as diseases of the liver, gallbladder and pancreas, covering the broadest range among all of the internal medicine fields.
    We use endoscopy in a wide range of examinations and procedures for gastrointestinal diseases (esophagus, stomach, duodenum, small intestine, and large intestine) and have handled a number of cases from screening examinations to endoscopic surgery (mucosal resection or submucosal dissection). If you think an endoscopic examination will be painful, transnasal endoscopy or endoscopic examination with intravenous sedatives can be employed so that you can have the examinations more comfortably. Capsule endoscopy and single-balloon endoscopy is now available for small intestinal disease that is recently increasing.
    Various liver, gallbladder, and pancreatic diseases are also handled from examination to cancer chemotherapy.


    The Nephrology Department handles general renal diseases, including acute or chronic nephritis, acute renal failure/acute kidney injury (AKI), chronic kidney disease (CKD), nephrotic syndrome, diabetic kidney disease, hereditary kidney disease, hypertensive nephrosclerosis, kidney disease associated with connective tissue diseases, and many others. Visit the Nephrology Department if any of the following apply:

  1. Abnormal urine test results as proteinuria or hematuria.
  2. Abnormal renal function items (high creatinine, high or low sodium or potassium etc.) in blood test.
  3. Severe swelling in the hands or face.
  4. High blood pressure has been identified.
  5. Hemodialysis or peritoneal dialysis has been advised.
  6. A patient treated for diabetes who has been identified as having proteinuria or decreasing renal function.
  7. A patient currently undergoing hemodialysis or peritoneal dialysis who has been identified as having a complication and/or poor condition.

The dialysis room has been renovated. We provide various acute blood purification therapies in cooperation with the Emergency Care Center (one of the major features of Hiroo Hospital), Respiratory Medicine Department, and Cardiovascular Surgery Department.


The Neurology Department is an internal medicine department that treats diseases of the peripheral nerves and muscles, in addition to diseases of the central nervous system (brain and spinal cord).

The Neurology Department provides medical care for symptoms of headache, dizziness, limb tremor, gait disorder, and muscle weakness, as well as diseases such as cerebral infarction and Parkinson's disease.

Particularly in treatment for cerebrovascular diseases, we consider early surgical therapies of endovascular treatment in cooperation with the Neurosurgery Department of Hiroo Hospital as needed. We hold regular joint meetings with the Neurosurgery Department and Radiology Department to seek safer and more secure medical care. In neurodegenerative diseases, particularly in treatment for Parkinson's disease, new drugs have been developed and more drugs have become available in recent years. Our staff have been engaged in treatment of Parkinson's disease for years and experienced in use of such drugs. They are making every effort to select the most appropriate treatment for individual patients.

By collaborating with local medical institutions and welfare facilities, we also provide medical care for acute and chronic diseases that is tailored for individual patients.

Respiratory Medicine

The Respiratory Medicine Department of Hiroo Hospital is characterized by handling a wide range of respiratory diseases, such as respiratory infections, asthma, COPD (chronic obstructive pulmonary disease), interstitial pneumonia, lung cancer, chronic respiratory failure, and sleep apnea, as well as respiratory rehabilitation, medical care for patients from isolated islands, and Chinese medicine. All staff are certified respiratory specialists or aiming to be certified respiratory specialists to be skilled in diagnosing and treating these diseases.


The Cardiology Department aims to provide medical care for up-to-date advanced medical care and minimally invasive treatment with a special emphasis on emergency medical care, ischemic heart disease, and arrhythmias.
In emergency medical care, we accept cardiac emergency patients 24 hours a day as an institute of the Tokyo CCU Network.
For the management of ischemic heart disease, we proactively perform cardiac catheterization (percutaneous transluminal coronary angioplasty or stenting) for occluded or narrowed vessels in acute myocardial infarction or angina pectoris, achieving favorable results. The retrograde approach is also performed in chronic total occlusion (CTO) cases that cannot be treated in other hospitals. In recent years, we proactively provide stentless treatment using coronary atherectomy angioplasty and drug-coated balloon (DCB) in combination. Coronary atherectomy angioplasty uses excimer laser (ELCA), Rotablator (ROTA), and a directional coronary atherectomy device (DCA). We evaluate the coronary artery using coronary CT or cardiac MRI to reduce physical stress on patients.
In addition to myocardial infarction, we treat heart failure due to cardiomyopathy, myocarditis, valvular disease, and pulmonary embolism with medication, intra-aortic balloon pumping (IABP), and a percutaneous cardiopulmonary support device (PCPS). In severe refractory cases irresponsive to IABP or PCPS, we consider placement of a ventricular assist device in cooperation with the Tokyo Medical and Dental University Medical Hospital.
We treat all sorts of arrhythmias, including atrial arrhythmias of atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia, as well as severer ventricular arrhythmia. We provide a wide variety of treatments, such as medication and catheter ablation. Among others, the number of cases treated with catheter ablation is at the top level within the Tokyo metropolitan area.
We use all sorts of implantable devices in treatment, such as pacemakers for bradyarrhythmia, implantable cardioverter-defibrillator (ICD) for ventricular arrhythmia, and cardiac resynchronization therapy (CRT) for low cardiac function cases. Recently, we perform treatment with subcutaneous ICD (S-ICD) or leadless pacemaker that poses fewer burdens.


The Neuropsychiatry Department mainly treats mood disorders of depression, impairment of thinking such as difficulty in thinking clearly, and cognitive impairment such as memory loss. Stress-related disorders (neuroses) and mood disorders (manic-depression or depression) each account for about one-quarter of new patients, followed by dementia and schizophrenia. The number of inpatients with mood disorders is the highest and account for about one-third, followed by schizophrenia (from Discharge Statistics 2008-2012).

Features of the Neuropsychiatry Department are (1) an open ward for hospitalization that is designed to provide refuge and protection space from stresses utilizing its structure in the hardware aspect, (2) provision of high-level psychiatric care in a hospital environment by utilizing a large number of staff with a wide variety of specialties, and (3) provision of psychiatric care for patients who also need physical management or imaging tests by utilizing the general hospital environment in the software aspect.


The Pediatric Department of Hiroo Hospital participates in the Tokyo ER. While focused on general pediatric diseases in cooperation with local pediatricians, we provide specialist medical care for pediatric allergic diseases, obesity/metabolic syndrome, and pediatric neuropsychiatric disorders. The Pediatric Department of Hiroo Hospital is certified for these specialties by the major academic societies in Japan. We conduct not only treatment for pediatric diseases, but also activities to promote children's healthy future.

Pediatric allergic diseases

We treat bronchial asthma and food allergies. We provide specialized food tolerance testing (requiring short-term hospitalization) for children with food allergies, respiratory function testing for young children with asthma, and skin prick testing. Emergency care for asthmatic attack and food-induced anaphylactic shock is also available. We are certified as an educational facility by the Japanese Society of Allergology.

Pediatric lifestyle-related diseases and metabolic syndrome

We conduct complete examination, lifestyle guidance, and treatment for pediatric lifestyle-related diseases of obesity, hyperlipidemia, hypertension, and diabetes mellitus. We can also diagnose early arteriosclerosis from childhood by using vascular ultrasonography and plethysmography. We are certified by the Japan Society for the Study of Obesity as a special facility for obesity and can provide specialist medical care for obesity and metabolic syndrome.

Pediatric cardiac disease

We provide diagnosis and treatment for congenital heart diseases and Kawasaki disease. Echocardiography is available.

Pediatric psychiatric and neurological disorders

We provide advice and treatment regarding delayed development of movement or speech, as well as for epilepsy, school truancy, psychosomatic diseases, and developmental disorders. Patients have to be examined by a doctor before making an appointment for psychological consultation.

Surgery (Gastrointestinal, Breast, and Respiratory Surgery)

The Surgery Department mainly provides surgical treatment for malignant tumors of the digestive system, breast, and respiratory system, as well as the benign diseases such as acute appendicitis, gallstone/cholecystitis, and inguinal hernia. Our features include the following:

  1. Minimally invasive surgery (laparoscopic or thoracoscopic surgery)
  2. Rapid treatment (complete assessment and surgery within one to two weeks after referral for a malignancy)
  3. Emergency care.

Treatment of malignancies, such as colon cancer and stomach cancer, is at the heart of our department. Introduction of minimally invasive surgery, such as laparoscopic surgery, has led to lower postoperative pain and a shorter duration of hospitalization than before. We provide safe and precise minimally invasive surgery, mainly by surgeons who are technically certified by the Japan Society for Endoscopic Surgery.
Malignancies may require chemotherapy (anticancer drugs) before or after surgery. In such cases, personnel experienced in chemotherapy provide treatment, and we have the advantage of smoothly conducting both surgery and chemotherapy.
Emergency care is our priority, and we provide primary to tertiary emergency care 24 hours a day. We accept various emergency conditions, particularly acute abdomen, trauma, and spontaneous pneumothorax. The doctors on call respond promptly during regular working hours, while doctors on duty attend at night and on holidays. Medical care is provided by more than one team ensuring support so that severe cases are managed intensively.
Specialists in various areas seek to provide the latest high-quality surgical treatment safely for every disease. Patients can feel safe with us.

Cardiovascular Surgery

The Cardiovascular Surgery Department is certified as a base training hospital by the Japanese Board of Cardiovascular Surgery and conducts various operations in the field of cardiovascular surgery (except heart transplantation). Particularly, as an emergency supporting hospital for the acute aortic network, we have a system for prompt treatment of aortic dissection or ruptured aortic aneurysm, which are highly urgent conditions.

Orthopedic Surgery

The Orthopedic Surgery Department treats polytrauma patients, such as multiple fractures, including fractures of the spine, pelvis, and extremities, in cooperation with the Emergency Care Center. We also have an abundance of experience in single fractures of the upper/lower limbs. in cooperation with the Orthopedic Surgery Department of the University of Tokyo, we serve as a center for diagnosis and treatment of peripheral neurotrauma/diseases such as brachial plexus injury, and we hold a special clinic for peripheral nerve surgery.
In addition, we conduct conservative treatment and operations for hand surgery, refractory fractures (elongation of leg), spinal diseases, and joint diseases (shoulder, elbow, hip, and knee)
We are ready to provide transfusions with autologous blood in situations other than emergency surgery.


The Rehabilitation Department aims to assist patients to recover from disabilities as much as possible to improve the daily quality of life. The range of disabilities treated is wide. Hiroo Hospital provides the best rehabilitation tailored to the disability and condition of each patient.
With regard to emergency medical care, one of our features, the Rehabilitation Department puts special emphasis on acute rehabilitation, which has recently been attracting attention. We provide locomotor rehabilitation, cerebrovascular event rehabilitation, respiratory rehabilitation, and rehabilitation for disuse syndrome mainly for inpatients.
Since Hiroo Hospital considers emergency/disaster medicine as one of the main medical objectives, locomotor rehabilitation is focused on acute rehabilitation for trauma patients. In cooperation with the Center for Diagnosis and Treatment of Peripheral Nerve Neurotrauma/Diseases in our Orthopedics Department, we provide highly specialized postoperative rehabilitation for neurotrauma, such as brachial plexus injury.
With regard to medical care for cerebrovascular disease, one of our main medical care objectives, cerebrovascular rehabilitation is focused on acute phase rehabilitation that is considered to be critical for recovery from stroke.
In cooperation with the Respiratory Medicine Department, we provide respiratory rehabilitation for in-patients with chronic obstructive pulmonary disease (COPD: emphysema or chronic bronchitis) and assist respiratory patients to improve the quality of life.
We provide rehabilitation for disuse syndrome to improve reduced muscle force and ability of daily life due to hospitalization.
We promote collaboration among different specialists and have regular conferences to consider treatment issues and confirm treatment strategies while providing training.


Providing care 24 hours a day for 365 days a year.
At present, four neurosurgeons provide care in the Neurosurgery Department with support from Juntendo University and the Self-Defense Forces Central Hospital as needed. This system allows us to respond to requests from local patients as well as nearby medical institutions about their patients.

Treatment is selected according to the patient's symptoms (intravascular surgery or craniotomy).
Under the Tokyo ER system, the Neurosurgery Department of Hiroo Hospital provides primary to tertiary emergency care for various neurosurgical diseases, such as cerebrovascular diseases, brain tumor, and head trauma, which is available 24 hours a day, 365 days a year. Especially for subarachnoid hemorrhage, where the quality of treatment critically influences the survival of patients, we are able to provide either intravascular treatment (coiling) or craniotomy (clipping) at any time according to the symptoms of the patients. With advances and popularization of intravascular surgery, more medical institutions have been selecting intravascular treatment as first-line therapy for subarachnoid hemorrhage in recent years, and we have been proactively providing first-line intravascular treatment for subarachnoid hemorrhage in cooperation with the cerebrovascular treatment team of Juntendo University since 2003. Intravascular surgery may not be suitable for some patients for whom a craniotomy is conducted instead. The outcomes of both methods are favorable and nearly equivalent.

Using the latest facilities to provide high-level and safer care
By installing the latest treatment facilities, we aim to provide high-level, safer care with a smaller burden on patients. In April 2017, we introduced a new angiography device to further improve intravascular treatment (Artis Q ceiling; Siemens). The new device equipped with flat panel technology allows us to obtain significantly better high-resolution images at lower dose than the previous ones, so we can achieve high-level and safer intravascular treatment.

Hiroo Hospital proactively performs thrombolytic therapy (treatment to dissolve blood clots) and thrombus collection therapy (collect the blood clots to reopen the obstructed vessel). These therapies have limitations in conditions for indication and time, etc. So, feel free to ask the Neurosurgery Clinic for details.

We provide botulinum therapy for muscle spasms.
Paralysis of the limbs is the most commonly observed sequelae of stroke, and it is often associated with tightness of the muscles.

This tightness of the muscles sometimes makes rehabilitation difficult to perform.
Among various methods, we provide botulinum therapy for spasticity.

Muscle spasm is reduced by injecting botulinum toxin produced by the bacterium Clostridium botulinum into the contracted muscle.

By reducing muscle spasms with botulinum therapy while performing rehabilitation, patients may be able to carry out daily activities more easily.
Feel free to ask Neurosurgery Clinic for details.

Plastic and Reconstructive Surgery

The Plastic and Reconstructive Surgery Department treats trauma, deformities, and functional impairment of the body surface from the head to toes. We do not treat limited sites but various body sites because this discipline has developed with emphasis on the concept of wound healing, the basis of surgical disciplines.


The Dermatology Department treats general skin diseases of eczema and athlete's foot and proactively performs surgical treatment of skin tumors. We place special emphasis on dermatologic surgery. Female doctors mainly provide from diagnosis to treatment. We proactively accept, treat, and perform operations for foreign patients.


We provide care for diseases of the urinary tract (kidneys, ureters, bladder, and urethra), male genital organs (prostate gland, testes, and penis), and adrenal glands. We provide conservative treatment, such as medication and surgical treatment including endoscopic surgery. Currently, two full-time doctors are in charge of medical care for inpatients and outpatients. We provide treatment taking into account the patient's quality of life.

Visit the outpatient clinic of Urology Department if you are applicable to any of the followings: blood in urine, hematuria was identified at a health checkup, a man who needs to urinate frequently/finds it difficult to urinate, a man with PSA identified to be high, or a woman who urinates frequently or has leakage of urine. We have been proactively providing treatment for local people.

We have books and leaflets for patients at the reception of the outpatient clinic. Please feel free to have a look. We have a mini-library because patients often have to wait for a long time, although we are trying to reduce waiting time.

Obstetrics and Gynecology

As emergency care and medical care for people in the isolated islands is Hiroo Hospital's priority, we handle emergencies due to blood loss, such as obstetric/gynecologic acute abdomen, intraabdominal hemorrhage, and genital hemorrhage. Taking advantage of being a general hospital with the Neuropsychiatry Department, we also treat obstetric and gynecologic diseases with any complications.


  • We handle gynecologic emergencies of ectopic pregnancy, ovarian hemorrhage, torsion of ovarian cyst pedicle, and myoma delivery.
  • For gynecologic tumors, particularly uterine cancer and ovarian cancer, we provide preoperative chemotherapy, surgical therapies of paraaortic lymph node dissection, and post-operative chemotherapy in advanced cases, as well as radiotherapy in cooperation with the Radiology Department. Benign tumors (hysteromyoma and ovarian cystoma etc.) may be treated with endoscopic surgery depending on the condition.
  • We provide appropriate treatments for various gynecologic inflammatory and infectious diseases from conservative therapy to surgical therapy.
  • Although we treat inpatients in a team medical care, we designate an attending doctor for each patient, allowing close communication between doctors and patients, from examination to operation and postoperative management.

Obstetric (perinatal)

  • We select spontaneous labor as our fundamental idea. However, if induced labor or cesarean section is indicated, we proactively conduct these procedures.
  • Because we do not have an NICU, we cannot attend deliveries before week 36 of gestation or those with estimated fetal body weight less than 2000 g. However, in cooperation with the Pediatric Department, we attend delivery before week 36 if NICU management of the expected infant is not needed.
  • We proactively attend obstetric emergencies of premature ablation of a normally implanted placenta, placenta previa, or uterine rupture if NICU management of the expected infant is not needed.
  • We attend complicated pregnancies (diabetes mellitus, hypertension, thyroid diseases, and psychiatric diseases, etc.) as much as possible, deliberating with the attending doctors of other departments. However, if NICU management of the expected infant is needed when delivery is unavoidable during follow-up, the mother may be transferred to another hospital as necessary after deliberation for individual cases.

Maternity nurse activities

  • Ubugoe Class (mother's class) is held every month. This is also a preparation class for delivery with the husband present. We expect the participation by the expecting mothers or couples. We also provide husbands with advice on childcare or support for their wives during pregnancy. If you are referred to our department, let your husband know about this. You can sign up when you have health instruction at the Gynecology and Obstetric Clinic.
  • We established the Mother Care Clinic by maternity nurses in June 2011 so that ambulatory pregnant women can deliver securely. We provide consultation for about 30 minutes in a dedicated space. Maternity nurses will cordially support you from the ambulatory period to delivery in hospital. Feel free to utilize this clinic.
  • Although the Obstetric Department is extremely busy, we would like to make every effort together with local people as much as possible. We would be grateful if you forgive the inconveniences such as limited acceptance of deliveries.

Obstetrics Ward

  • We have aimed to ensure safety, medical care quality, and an environment that allows comfortable delivery for mothers and infants. So, we have expanded the space available for husbands and other family members to accompany women in labor, where we have chairs and sofas for family members.
  • As a part of the project to promote rooftop greenery under the Tokyo green policy, we have created a 250-square meter green garden (sun garden) above the Obstetrics Department and Pediatric Department.
  • Based on the philosophy of patient-centered medical care and in accordance with the Tokyo patient's bill of rights, the Obstetrics Ward provides services, such as a coin-operated washing machine and a sink for washing hair, as well as a memorial message card with a picture of the mother, husband, and new baby taken on the day of birth, while providing improved kangaroo care and parenting classes.


The Ophthalmology Department provides a full range of ophthalmology care focused on surgery for cataracts, corneal/conjunctival diseases, and vitreoretinal diseases. We provide medical care aiming to improve the quality of vision (QOV) from the patient's standpoint.

When performing cataract surgery, we proactively correct astigmatism.
We conduct small incision phacoemulsification in almost all patients, ranging from cases without complications to those with systemic complications. If astigmatism needs to be corrected, we insert a toric lens (an intraocular lens for astigmatism). Cataract surgery requires hospitalization for two days and one night, although patients with family or work commitments may go home on the day of surgery, and patients who are physically disabled or from a distant place may stay longer on request.
One of our focuses is caring for patients from the isolated islands, and patients from Izu or Ogasawara Island who wish cataract surgery are hospitalized immediately if possible, taking into account transportation access. Surgery is performed on Tuesdays and Thursdays. Patients who wish to undergo surgery can call the Ophthalmology Outpatient Clinic (03-3444-1181), visit us on either Monday or Wednesday, and then be hospitalized on the same day for surgery on the next day.

For vitreous surgery, a small-incision vitreous surgery system and a wide-angle fundus observation system have been introduced.
In addition to retinal detachment and diabetic retinopathy, the indications for vitreous surgery have been expanded to improvement of vision in patients with macular disease. We have devised a method to prevent complications with 25-gauge small-incision vitreous surgery using the wide-angle fundus observation system. We have also introduced optical coherence tomography (OCT) to focus on macular disease.

We perform intravitreal injection of anti-VEGF drugs.
The indications for intravitreal injection of anti-VEGF drugs have been expanded to include retinal vein occlusion and diabetic retinopathy associated with macular edema and choroidal neovascularization due to pathological myopia, in addition to age-related macular degeneration. We offer advice on the optimal management according to your disease state.

We provide diagnosis and treatment of uveitis.
Difficult cases are managed in cooperation with Tokyo Medical and Dental University. We also treat complicated cataracts associated with uveitis.

We provide diagnosis and treatment for corneal diseases.
We treat not only infections but also bullous keratopathy and corneal dystrophy. We also remove corneal opacities in patients with band dystrophy.


We manage the full range of ear, nose, and throat diseases. In addition to conservative treatment, we proactively conduct surgery in the head and neck region. Consult us as we accept not only operation cases but also those who require inpatient treatment for conditions such as sudden deafness, facial nerve palsy, Meniere's disease, and nasal bleeding.

We hold a general outpatient clinic in the morning and a special outpatient clinic in the afternoon on weekdays. An appointment is required for consultation, so make reservations in advance before visiting us.


In the Radiology Department, three doctors seek rapid imaging diagnosis and preparation of accurate reports.
We use two 320-row multi-slice CT units in thorough CT scanning. We provide clear images and seek improvement in our diagnostic performance by constructing 3-D images of the heart, major vessels, cerebral vessels, bones, and colon while using site-specific analysis software. The 320-row CT unit capable of rapid scanning is very effective in emergency medical care, one of the greatest duties of Hiroo Hospital.
The MRI is performed using a 1.5 Tesla unit with high diagnostic performance for diseases of the brain, heart/vessels, liver/gallbladder/pancreas, and pelvic viscera, such as uterus/ovaries and prostate, as well as the orthopedic field. At Hiroo Hospital, imaging is managed by certified MRI technicians. The MRI contributes to the local healthcare network by providing excellent images and accurate and prompt reports.
We also provide services that require specialist experience such as isotope studies, angiography (IVR), and contrast gastrointestinal examinations.
Radiotherapy for malignancies is performed by a part-time radiologist using a linac device.

Dentistry and Oral Surgery

The Dentistry and Oral Surgery Department provides dental services in two categories: medically compromised patients/patients with disabilities, and oral surgery. We proactively provide inpatient treatment, depending on the situation.

Treatment provided

Oral surgery

  • Surgical therapy is mainly performed for maxillofacial malignancies and may be conducted concurrently with treatment in the Radiology Department in some cases.
  • Maxillofacial reconstruction is performed jointly with the Plastic and Reconstructive Surgery Department of Hiroo Hospital, taking into account functional and esthetical aspects.
  • Patients can be hospitalized immediately for the treatment of maxillofacial trauma and odontogenic infection.
  • Fracture of the jaw can be treated by open reduction-fixation using an intraoral plate.

Dentistry for medically compromised patients/patients with disabilities

  • Our priority is providing treatment at risk, such as tooth extraction or pulp extirpation in patients with systemic diseases, such as heart disease, hypertension, or diabetes mellitus.
  • As a part of our services for medically compromised patients/patients with disabilities, we provide dental treatment under intravenous anesthesia with propofol (target-controlled infusion method). The Bispectral Index (brain monitor) is used for better regulation of anesthesia. The intravenous sedation is also used for reduction of the stress in oral surgery, and in some patients with heart diseases, patients with a strong gag reflex, and patients with a history of vagal reflex or hyperventilation episode during dental treatment.

Treatment provided

Oral surgery

  • Complicated tooth extraction, including wisdom tooth extraction, wisdom tooth transplantation, management of maxillofacial inflammations, such as cellulitis or jaw inflammation, temporomandibular joint disorders, temporomandibular joint dislocation, and stomatitis/oral mucosal disease.
  • Conservative therapy and surgical therapy for fracture of the jaw or tooth loss due to trauma, tooth fracture, and benign/malignant maxillofacial tumors.
  • Iliac transplantation for jaw deformity and cheilognathouranoschisis cases.

Dentistry for medically compromised patients and patients with disabilities

  • Patients requiring careful systemic management
  • Dental treatment for patients with disabilities


We seek safe and high quality anesthesia so that patients can have an operation securely.

Endoscopy Center

The Endoscopy Center is constituted by doctors from the Gastroenterology Department, Gastrointestinal Surgery Department, Respiratory Medicine Department, and Emergency Care Center. We conduct about 3,000 to 4,000 endoscopic examinations each year, including upper gastrointestinal endoscopy (esophagus, stomach, and duodenum), lower gastrointestinal endoscopy (colon), bronchoscopy, and endoscopic retrograde cholangiopancreatography (ERCP). As a tertiary emergency hospital, emergency endoscopy is performed in the majority of cases such as gastrointestinal bleeding. The number of emergency endoscopies performed each year reaches 400, combining secondary emergencies and hospital-acquired cases.
In recent years, various endoscopic treatments have become popular, and we proactively conduct endoscopic polypectomy, endoscopic mucosal resection (EMR), and endoscopic submucosal dissection (ESD) for early cancer and polyps. Additionally, we provide a wide range of examinations and treatments for various diseases, including endoscopic variceal ligation (EVL), endoscopic injection sclerotherapy (EIS), endoscopic sphincterotomy (EST) and endoscopic papillary large balloon dilation (EPLBD) for choledocholith, endoscopic stenting for esophageal cancer, bile duct cancer, colon cancer, and other diseases, endoscopic balloon dilation for esophageal stenosis, and emergency hemostasis for gastrointestinal bleeding.
Recently, small intestine diseases are gathering attention and the Gastrointestinal Department evaluates such diseases with capsule endoscopy or single balloon endoscopy.
As a part of the healthcare network, one of the features of the center, we accept direct requests for upper/lower gastrointestinal endoscopy from doctors belonging to local medical associations and conduct the examination in a one-day visit.

Last updated:2018/2/28