Urological oncology: a comparison between clinical and pathologic staging in patients with bladder cancer

To determine the accuracy of clinical staging methods of bladder cancer and TURBT results in estimating the pathologic stage of tumor. Thirty two patients who had undergone radical cystectomy were studied in this retrospective survey. The results of bimanual examination, cystoscopy, TURBT pathology report and the tumor contour in CT scan, [size, infiltrative deepness, pelvic lymph nodes involvement and hydronephrosis] were recorded. The type of surgery and pathologic report of cystectomy sample were analyzed as well. Then the results of bimanual examination, tumor size, hydronephrosis and CT scan findings including tumor infiltrative deepness, pelvic lymph adenopathy and TURBT findings were compared to pathologic results of cystectomy sample. Seven patients were females and 25 were males. Their mean age was 62 [range 36 to 80] years. Gross hematuria and irritative urinary symptoms were the most common complaints. The duration between symptom manifestation and patient's referral was 5 days to 72 months [mean 12 months]. Bimanual examination in estimating the extravesical involvement of tumor had a specificity of 82%, sensitivity of 46%, positive predictive value of 70% and negative predictive value of 63%. The size of tumor in determining extravesical involvement had a specificity of 41%, sensitivity of 93%, and positive predictive value of 58% and negative predictive value of 87%. Hydronephrosis was present in 15 patients of whom, 14 [93%] had bladder muscle involvement. CT scan specificity was 70%, and sensitivity was 46% regarding pelvic lymph adenopathy and perivesical fat involvement. In TURBT report no muscle sample was observed in 11 cases, so that the interpretations of results were impossible. The reported grade of tumor was lower than pathologic sample of cystectomy in 4 patients. Clinical staging in invasive bladder cancers has not high accuracy regarding the involvement of bladder surrounding fats and pelvic adenopathies. A tumor sized more than 5 cm could be sensitive in estimating extravesical involvement. Positive predictive value of hydronephrosis is considerable regarding bladder muscle involvement. Tumor understaging by TURBT is happened in high percentage of patients with invasive bladder cancer

Management of Peyronie's Disease by Dermal Grafting

To evaluate the results of plaque excision and dermal grafting in Peyronie's disease. Twenty seven patients were scheduled to undergo plaque excision and dermal grafting for Peyronie's disease. Potency, bending of erected penis, and having painful erection were evaluated in patients before and after operation. To evaluate erectile dysfunction, we used International Index of Erectile Function [IIEF] by interviewing the patients and filling questionnaires by their partners. Doppler ultrasonography was used to determine the vascular competence of penis before and after operation in 15 patients. The disease was more prevalent between the ages of 40 and 60 years. Plaques were located as follows: dorsal in 18, right lateral in 6 and left lateral in 3. Mean plaque size was 11 [range 5 to 18] mm. After plaque excision and dermal grafting, penile deformity, erectile dysfunction, and painful erection had remained yet in 4 [15%] out of 27, 3 [16%] out of 19, and 3 [14%] out of 22, respectively. Doppler ultrasonographic study in 15 patients revealed improvement in peak systolic velocity [p<0.01]. In addition, a decrease in end diastolic velocity was noted also that was not significant statistically [p=0.26]. Resistive index did not improve after operation. This procedure showed significant improvement in penile deformity [85% of cases], erectile dysfunction [84% of cases] and painful erection [86% of cases]. We recommend plaque excision and dermal grafting as an effective procedure in treating Peyronie's disease

Evaluation of urinary calculi by infrared spectroscopy

To analyze urinary calculi composition and its relationship with gender, age, calculus weight, color, and location. Two hundred and forty one patients with urinary calculus, who had undergone open lithotomy from June 1999 to April 2001, were enrolled in this prospective study which was performed by Tehran and Oroomieh Medical Sciences Universities. The calculi compositions were analyzed by infrared spectroscopy in Bonn University. Statistical analyses were made by paired t test. One hundred and forty five males with a mean age of 40.4 years and 96 females with a mean age of 42.5 years were enrolled in this study. Mean calculus weight was 4.28 gr. Mean calculus number was 4.33. Thirty four [14.1%] calculi were pure [carbonate apatite: 2, brushite: 1, uric acid: 19, cystine: 3, weddellite: 6, mono- NH4-urate: 2, struvite: 1], 207[85.6%] were mixed and none of them contained octa-caphosphate, apatite, newberyte, 2,8-dihydroxyadenine, mono-Na-urate, or xanthine. Weddellite was found in 77% of calculi. It comprised more than 50% of them in 26% of cases. Whewellite crystals were found in 78% of calculi. It comprised more than 50% of them in 46% of cases. The most common pure calculus was uric acid and the most common component of calculi was whewellite followed by weddellite. Although there is no comprehensive study on urolithiasis incidence and prevalence in Iran, it can be concluded that whewellite and weddellite may be the most common components of urolithiasis in Iran and uric acid calculi are the most common pure calculi. There was no significant difference in calculi composition in our study