Centers & Services


What is Urology?

The Department of urology generally treats diseases of or affecting the urinary system, including the kidney, urinary tract and bladder, prostate gland, and male genital organs.

Our physicians

Director, Department of Urology

Yasutomo Nasu, Professor
[Cancer of the urinary tract and genitals]


Toyohiko Watanabe Associate Professor [Neurogenic urology]
Masami Watanabe Professor
(Center for Innovative Clinical Medicine)
[Cancer of the urinary tract and genitals]
Motoo Araki Senior Assistant Professor [Renal transplantation and Robotic Surgery]
Ayano Ishii Associate Professor
(Integrated Support Center for Patients and Self-learning)
[Infectious diseases of the urinary tract, Female urology]
Yasuyuki Kobayashi Senior Assistant Professor
(Minimally Invasive Therapy Center)
[Laparoscopic surgery]
Morito Sugimoto Assistant Professor [Male sexual dysfunction]
Ryuta Tanimoto Assistant Professor [Urological oncology]
Koichiro Wada Senior Assistant Professor [Urogenital infections, endourology and renal transplantation]
Seiji Kai Assistant Professor [Urological oncology]
Atsushi Takamoto Assistant Professor [Cancer of the urinary tract and genitals]
Singo Nishimura Assistant Professor [Renal transplantation]

*Specialty shown in [ ]

Weekly schedule of outpatient clinicians

  Monday Tuseday Wednesday Thursday Friday
First consultation in the morning Dr. Iwata Professor Nasu Associate Professor Watanabe (First visit)   Senior Assistant Professor Kobayashi
Second consultation in the morning Dr. Tanimoto Attending Dr. Iwata   Senior Assistant Professor Wada
Third consultation in the morning Senior Assistant Professor Kobayashi (Revisit)   Senior Assistant Professor Wada Female urology outpatient (Associate Professor Ayano Ishii) Dr.Tanimoto
Fourth consultation in the morning Urinary incontinence outpatient service Neurogenic bladder outpatient (Associate Professor Watanabe)   Dr. Sugimoto   Dr. Sugimoto
Fifth consultation in the morning Dr. Takamoto   Senior Assistant Professor Araki General urology and renal transplantation   Tumor outpatient (Dr. Takamoto)
Sixth consultation in the morning Dr. Nishimura   Dr. Nishimura   Outpatient service of renal transplantation and urology in general (Senior Assistant Professor Araki)
First consultation in the afternoon     Male sexual dysfunction and male climacterium outpatient Gender clinic Male infertility, endocrine    
Second consultation in the afternoon         Outpatient service of renal transplantation and urology in general (Senior Assistant Professor Araki)
Third consultation in the afternoon Small sealed treatment outpatient (Dr. Takamoto)     Female urology outpatient (Assistant Professor Ayano Ishii)  
Fourth consultation in the afternoon          

Outpatient consultation days

Morning of Monday, Wednesday and Friday: general and specialized outpatient services.
Morning of Tuesday: general outpatient service, Morning of Thursday:specialized outpatient services.
Afternoon of Monday, Wednesday, Thursday and Friday: specialized outpatient service.

Treatment policy

With a patient-friendly approach, this general diagnosis and treatment department works on wide-ranging urinary diseases, from a combination of less invasive and effective examination, scalpel-exerting surgical therapy, medical therapy with drugs, and holistic medical care providing psychological support.


Japan’s top-level specialists provide medical care for the whole field of urology, including urinary tract and genital tumors, urinary tract infectious diseases, urinary tract stones, difficulty of voiding, male sexual dysfunction, female urological diseases, gender identity disorder, urological endoscopic operation, and laparoscopic surgery.


  • Urinary tract and genital tumors: renal cancer, renal pelvis cancer, ureteral cancer, prostate cancer, penile cancer, testicular cancer, adrenal tumor and others, including retroperitoneal tumor
  • Infectious diseases: pyelonephritis, cystitis, prostatitis, epididymitis, and urethritis
  • Urinary tract stones: nephrolithiasis, ureterolithiasis, and cystolithiasis
  • Difficulty of voiding: neurogenic bladder, prostatic hyperplasia, and hyperactive bladder
  • Male sexual dysfunction: male infertility, erectile dysfunction, male climacterium, and hypogonadism
  • Female urology: stress incontinence and pelvic organ prolapse
  • Gender identity disorder
  • Chronic renal failure

Description of medical care

The Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences makes progressive approaches in all fields of urology and aims to provide optimal care by standing in the patients’ shoes, and respecting the key principles of “progress, dialogue and kindness.” Not only general outpatient services of urinary tract stones, tumors, infectious diseases and urological impairment but also specialized outpatient services of female urology, neurogenic bladder, urinary incontinence, male infertility and internal secretion, male sexual dysfunction, prostatic gland, tumors, infectious diseases, and urostoma are provided.

Specialized outpatient service

Female urology outpatient service

The outpatient service is provided by female urologists for female patients, especially for those who have difficulties but who hesitate to visit a department of urology. If you have symptoms of frequent urination, stress incontinence, and discomfort in the lower abdomen, or if a re-inspection is recommended because of positive occult blood, or a relapse of bladder inflammation, please visit us.
All physicians and nurses are women, so you can relax and visit our offices. After slow and careful consultation, we will select and perform necessary inspections, make a diagnosis and then present you options of treatment. We strive for your optimal care.
Thursday: Third consultation in the morning and afternoon
Ayano Ishii

Gender clinic

This clinic consisting of members from four departments of neuropsychiatry, obstetrics & gynecology, plastic and reconstructive surgery, and urology provides comprehensive care to patients with gender identity disorder.
Over ten cases of sex reassignment surgery (SRS) have been performed to date. In addition, patients who undergo hormone therapy have been increasing rapidly.
Wednesday: First consultation in the afternoon

Male sexual dysfunction outpatient service

The male sexual dysfunction outpatient service mainly targets erectile dysfunction (ED). We provide treatment and positive counseling for psychogenic ED as well as treatment for organic ED following surgeries in the pelvic region caused by prostate cancer, bladder cancer, and colorectal cancer.
Wednesday: First consultation in the afternoon

Male infertility and endocrine outpatient service

Advanced reproductive medical technology has been bringing a large change to male infertility treatment. Moreover, for raising the pregnancy rate through reproductive medical technology, improving semen findings has turned out to be necessary. Therefore, we make efforts to find varico cele, which is implicated in about 50% of male infertility. We have performed many less-invasive microsurgeries under local anesthetic. Additionally, we have performed microsurgeries on spermatemphraxis to contribute to the improvement of pregnancy rates.
Wednesday: First consultation in the afternoon

Incontinence outpatient service

Incontinence is experienced by about 28% of adult women, of whom about 15% are presumed to be therapeutic objectives. The highest frequency among them is stress incontinence, currently most of which cannot be dispersed only by administering oral medicine.
This department makes diagnoses by type and aims at appropriate treatment to improve the QOL of patients.
Additionally, it has produced less-invasive surgical approaches (incontinence operation through an endoscope and bladder neck-suspending procedure) aggressively, achieving satisfactory performance.
Monday: Fourth consultation in the morning.

Neurogenic bladder outpatient service

Patients suffering cerebrovascular disorders such as brain hemorrhage and infarction, spinal damage, or undergoing pelvic surgery caused by rectal cancer and uterine cancer often complain about urinary incontinence and emptying difficulties. Conducting investigations of the lower urinary tract on such neurogenic voiding disorders, clarifying the causes and providing treatments suitable for individual patients, we aim at contributing to improvement of their quality of life.
Monday: Fourth consultation in the morning

Tumor outpatient service

Cases of malignancy are increasing. Our department has been performing more operations for increasingly numerous prostate cancers, bladder cancers, and renal cell cancers. With regular follow-up after a definitive operation, this outpatient service aims for early detection of any recurrence. Starting outpatient resection, local radiation therapy, and chemotherapy in early stages can prolong survival.
Friday: Fifth consultation in the morning

Small sealed outpatient service

Iodine 125 used for small sealed treatment is a radioactive material enclosed in a titanium capsule. About 50-100 capsules are inserted into the prostate. They continue to emit radiation for one year and irradiate cancer lesions within the prostate. The treatment method is to irradiate and attack cancer lesions from the inside of the prostate. Consequently, it can be basically adopted in stage A or B, in which cancer lesions remain encapsulated in the prostate. Our department, the third to start brachytherapy in Japan, had provided this treatment to about 600 patients as of March 2017.
Monday: Third consultation in the afternoon

Chronic prostatitis outpatient service

Patients with chronic prostatitis develop various symptoms of frequent urination, feeling of residual urine, pain or discomfort with urination, and pain or discomfort of the groin, perineum, and urinary tract. Underlying those symptoms might be severe diseases such as bladder cancer and prostate cancer so that screening studies of the urinary tract and genitals are also necessary. Their clinical conditions often remain unexplained. They are refractory and recurrent. They also substantially decrease the QOL of patients and are therefore troubling diseases. We adopt diagnostic approaches for prostatitis syndromes (measurements of prostate-specific antigen and cytokine in prostatic fluid), elucidation of pathological conditions (related to pathogenic microbes and other involvements), and hyperthermia for benign prostatic hyperplasia to improve therapy outcomes.
Wednesday: Third consultation in the morning.

Urinary lithiasis outpatient service

Although 80-90% of the causes of urinary lithiasis remain unexplained, in many cases, hidden urinary diseases (urinary tract obstruction) or metabolic diseases (calcium, urinary acid, and amino acid dysbolism) can be inferred as causes. Therefore, we are working on screening of fundamental diseases that might cause stone formation. This treatment has made drastic strides by advanced urinary tract endoscopy and development of extracorporeal shock wave lithotripsy (ESWL). This department introduced it since 1993 and has been conducting treatment on over 100 cases per year based on outpatients. Additionally, even in cases that are difficult to treat with ESWL alone, we aim to remove stones completely using endoscopic therapy such as transurethral ureterolithotripsy (TUL) and percutaneous nephrolithotomy (PNL) together.
Wednesday: Third consultation in the morning.

Renal Transplantation outpatient service

Three methods are used as treatments for chronic renal failure: hemodialysis, peritoneal dialysis, and renal transplantation. Renal transplantation was introduced into Japan more than 30 years ago. Advancement of immunosuppressive drugs has raised the one-year engraftment rate to over 90%. Renal transplantation can improve QOL and prognostic survival rates.
Wednesday:fifth consultation in the morning.
Friday: Sixth consultation in the morning and second consultation in the afternoon;

Advanced treatments / Specialized treatments

Techniques used for health insurance treatments

  • Small sealed treatment
  • Robot Assisted Laparoscopic Radical Prostatectomy

Techniques registered as advanced treatments

  • Radiofrequency ablation therapy for renal malignancy

Techniques conducted as clinical research

  • Gene therapy for prostate cancer
  • Peptide therapy for prostate cancer

Techniques in medical treatment at patient’s own expense

  • Magnetic therapy for frequent urination and urinary incontinence

Major methods for testing and explanation

  • General survey: urinalysis, blood test and general imaging tests
  • Endoscopy: cystoscopy and renal pelvi-ureteroscopic tests
  • Voiding function tests: measurement of urine flow and urodynamic testing
  • Urography: intravenous urography, retrograde urography, cystography, urethrogram
  • Biopsy: prostate biopsy, transurethral bladder biopsy, and transurethral renal pelvic and ureter biopsy

Integrated Support Center for Patients and Self-learning (community health-care cooperative unit)

Okayama University Hospital hosts the Integrated Support Center for Patients and Self-learning (community health-care cooperative unit), which takes charge of some hospital services aside from treatment. Please see it to know how to be referred to the unit.
This unit offers advice for patients related to health-care, nursing care and welfare, home care and changing hospitals, and economic and psychological difficulties.
To help patients receive appropriate health-care in local communities, we work in cooperation with different medical institutes.

Where to call about outpatient visits

If you visit us for the first time, please contact the Integrated Support Center for Patients and Self-learning (community health-care cooperative unit): phone number, 086-235-7205 and fax number, 086-235-6761.
Telephone time: 8:30-17:15 except for Saturday, Sunday, and holidays including December 29 through January 3. (Fax is always available.)
If you return to the clinic, contact the outpatient service of this department: direct phone, 086-235-7945.