Surgical site infection of scrotal and inguinal lesions after urologic surgery.

To clarify the incidence of surgical site infection (SSI) after urological scrotal and inguinal surgical procedures and the preventive effect of antimicrobial prophylaxis for SSI, retrospective analysis was performed. The patients who underwent scrotal and inguinal operations from 2001 to 2010 were included in this analysis. A first or second generation cephalosporin was administered as antimicrobial prophylaxis just before the start of surgery and no additional prophylaxis was conducted. The surgery was classified into 76 (38%) cases with testicular sperm extraction (TESE), 72 (36%) with radical orchiectomy, 29 (14.5%) with bilateral orchiectomy (surgical castration) and 23 (11.5%) with other scrotal and inguinal operations. The median age and age range were 36 years and 18-81 years, respectively. SSI occurred in 7 (3.5%) cases. The frequencies of SSI were 6.5% in the patients with urological inguinal surgery and 1.6% in those with scrotal surgery. The frequency of SSI in the patients with urological inguinal surgery was not negligible even though it is considered a clean operation, and further analysis is warranted to prevent SSI.

[A case of squamous cell carcinoma of the bladder in a patient with interstitial cystitis].

A 60-year-old woman with interstitial cystitis (IC), who had previously received hydrodistention surgery, intravesical instillation of resiniferatoxin and medication, was being followed. Although urinary cytology was regularly tested with no positive findings, computed tomography carried out for screening of recurrent colon cancer showed muscle-invasive squamous cell carcinoma (SCC) of the bladder (cT3bN0M0). Cystectomy was performed, but she died due to rapid disease progression at 3 months postoperatively. Chronic inflammation can be the cause of development of SCC. It is dubious whether the specific treatments for IC affected her disease. In cases of IC with persistent pyuria, the development of SCC should be kept in mind, and affirmative examination including cystoscopy should be done regularly for early detection of the disease.

[Liver metastasis with portal vein tumor thrombosis as a late recurrence of chromophobe renal cell carcinoma].

We report a case of liver metastasis with portal vein tumor thrombosis from chromophobe renal cell carcinoma (RCC). A 62-year-old man was noted to have a wedge-shaped low density area in the liver by computed tomography thirteen years after radical nephrectomy. Hepatic arterioportal shunt was suspected because liver biopsy did not show malignancy. Several months later, the patient showed aggravation of liver function which did not improve regardless of anticoagulant therapy. Recurrent liver biopsy revealed metastatic RCC. Autopsy showed portal vein tumor thrombus from RCC in the liver.

Current survey of urinary tuberculosis in Hokkaido, Japan.

Urinary tuberculosis has been rare in recent years and its diagnosis is difficult because there are no disease-specific symptoms. We tried to clarify the occurrence of urinary tuberculosis in recent years in our area. During the past 5 years, there were 12 patients with urinary tuberculosis in the clinics that participated in this study. Their chief complaints were frequent voiding in 7 patients and gross hematuria in 3 patients. They were diagnosed by nucleic acid amplification tests and imaging modalities such as excretory urography, computed tomography, and/or cystoscopy. Most of the patients received multidrug treatment and had relatively favorable treatment outcomes. There has been a small but neglected number of patients with urinary tuberculosis in recent years. We should keep this rare and difficult-to-diagnose disease in mind and suspect it when patients complain of longstanding urinary symptoms with no obvious cause.

[Hydrodistention of the bladder in patients with interstitial cystitis--clinical efficacy and its association with immunohistochemical findings for bladder tissues].

We retrospectively analyzed the clinical relevance of hydrodistention under anesthesia for patients having urgency and/or lower abdominal pain who were clinically diagnosed as having interstitial cystitis (IC) from May 1996 to May 2005. Their symptoms were refractory to anticholinergic or antiinflammatory agents. Hydrodistention was performed under general or spinal anesthesia with direct vision by cystoscopy and irrigation fluid was instilled into the bladder at a pressure of 80 cmH2O. Cystoscopic findings revealed glomerulation in 26 patients (96%), cracking in 10 (37%) and Hunner's ulcer in 3. Twenty-four patients (89%) obtained improvement of the objective symptoms after treatment. However, symptoms soon deteriorated in 16 patients, and the average duration of efficacy was only 4.7 months (SD; +/-3.7). There were two episodes of complication in this treatment. Bladder rupture occurred during hydrodistention, but was successfully managed with simple percutaneous perivesical drainage. One patient with acute pyelonephritis was treated with an antimicrobial agent without any additional treatment. Although bladder specimens were examined by immunohistochemistry, tryptase and c-kit were not linked with the mast cell count, severity of symptoms or treatment efficacy. Hydrodistention of the bladder may be recommended as the first treatment choice for patients with IC because it provides relatively high efficacy. However, the short duration of the efficacy requires a second-line treatment option for better management of patients with IC.

[Intravesical instillation of resiniferatoxin for the patients with interstitial cystitis].

Although hydrodistention of the bladder is accepted as the initial treatment for patients with interstitial cystitis (IC), second-line treatment for worsening symptoms is not concretely established. Resiniferatoxin (RTX) desensitizes bladder afferent c-fibers and its intravesical instillation is effective for patients with detrusor overactivity. We studied the clinical relevance of intravesical treatment with RTX for patients with IC. The treatment was performed for 3 patients with incomplete improvement after hydrodistention. All 3 patients were free of bladder pain posttreatment and had slight improvement of the maximum voided volume. Though RTX treatment requires general anesthesia against severe bladder pain it is effective for selected patients with interstitial cystitis and can be potentially used as one of the treatment options.

Incidence of sexually transmitted infections in asymptomatic healthy young Japanese men.

The aim of this study was to estimate the incidence rates of asymptomatic sexually transmitted infections (STI) in young men in Sapporo, Japan. A survey of 204 healthy male volunteers was conducted. First-voided urine specimens were used for detection of Chlamydia trachomatis and Neisseria gonorrhoeae with polymerase chain reaction assay, and cotton swab wiping of the external genitalia was used for detection of human papillomavirus (HPV) with the Hybrid Capture method. The incidence rates were 3.4% for C. trachomatis and 5.9% for HPV. No N. gonorrhoeae was detected. In sexually active men who had regular sexual intercourse, the detection rate of C. trachomatis was 4.7% and that of HPV was 8.0%. Our study showed that the incidence rates of asymptomatic STIs were not negligible, and that we should provide screening programs for young men with a high risk for such unrecognized infections and study their natural histories.