RESUMO
PURPOSE: We evaluated the clinical use of air cystoscopy, including its possible advantages and disadvantages over water cystoscopy. MATERIALS AND METHODS: Two independent observers prospectively studied consecutive patients who underwent water cystoscopy first and then air cystoscopy at our center from May to September 2012. The indication for rigid cystoscopy in the operating room was noted independently by either observer. Findings after rigid cystoscopy were correlated with the results of flexible water and air cystoscopy using the Pearson correlation and Student t-test. RESULTS: Included in the study were 57 patients with active hematuria, of whom 36 had bladder cancer, and 257 with a history of bladder tumor. The cause of bleeding was clearly identified on water cystoscopy in 22 patients (38%), including tumors in 17 and prostate bleeding in 5, and by air cystoscopy in 49 (86%), including tumors in 32 and prostate bleeding in 17. For diagnosing bladder tumors air cystoscopy had higher sensitivity than water cystoscopy (88% vs 47%, p=0.003) and similar specificity (97% vs 100%, p=0.93). In the 295 patients without hematuria there was no difference in the indication compared to that identified on rigid cystoscopy (43 vs 43, p=1.0). Water cystoscopy revealed more small papillary tumors than air cystoscopy but the number was not significantly different (76 vs 67, p=0.26). All such implants identified on water cystoscopy alone were less than 2 mm. No complication specifically related to air cystoscopy was noted. CONCLUSIONS: We found no statistical difference between water and air cystoscopy in patients without hematuria. Air cystoscopy had higher sensitivity and specificity for diagnosing active hematuria while adding almost no specific complications to the procedure.
Assuntos
Ar , Cistoscopia/métodos , Hematúria/diagnóstico , Água , Feminino , Hematúria/etiologia , Humanos , Masculino , Estudos Prospectivos , Neoplasias da Bexiga Urinária/complicaçõesRESUMO
Natural orifice transluminal endoscopic surgery designates a surgical procedure that utilizes one or more patent natural orifices of the body with the intention to puncture a hollow viscera in order to enter the abdominal cavity. First carried out at the beginning of the 2000s in experimental models, it can be considered the natural evolution of laparoscopy towards the ideal of scarless surgery, as the avoidance of a large abdominal scar is associated with better cosmetic results and better recovery. However, the technology currently available does not allow the performance of complete pure natural orifice transluminal endoscopic surgery procedures. The surgical tools used are not specially designed for this approach, so difficulties in retracting organs, bleeding control and clashing of instruments are the main obstacle surgeons face. For this reason, the current available technique is the so-called hybrid approach, where a natural orifice approach is combined with some abdominal trocars, using the natural orifice as the exit door for the specimen removal. As not many comparative studies have been published evaluating the advantages of natural orifice transluminal endoscopic surgery in front of traditional laparoscopic surgery, a review of the history of natural orifice transluminal endoscopic surgery, and an assessment of the available evidence of this technique regarding renal and urological pelvic surgery are performed in this article.
Assuntos
Cirurgia Endoscópica por Orifício Natural/tendências , Procedimentos Cirúrgicos Urológicos/tendências , HumanosRESUMO
OBJECTIVES: To analyze the validity of the ratio between the second and fourth finger (digit ratio; 2D/4D) of the left hand as a predictor for prostate cancer (PCa) in a group of men undergoing prostate biopsy. METHODS: We prospectively recruited 204 consecutive patients referred for transrectal prostate biopsy due to PSA elevation or abnormal digital rectal examination between January 2008 and June 2009. The same physician performed all clinical examinations, digit ratio measurements and transrectal biopsy in all cases. Digit ratio determination was done with a Vernier caliper in the left hand. Patients underwent determination of hormone profile (testosterone and sexual hormone binding globulin (SHBG)) between 7:00AM and 11:00AM. Age, digital rectal examination, PSA, free PSA, PSA density, testosterone and SHBG, pathological report and D2 and D4 measurements were recorded prospectively. RESULTS: Variables age and SHBG were directly related to PCa. Prostate volume was inversely related to neoplasia. 2D/4D ratio >0,95 (OR (CI 95%) 4,4 (1,491-13,107) was related to neoplasia. No differences in PCa were seen regarding PSA, free PSA, PSA density, digital rectal examination and testosterone. CONCLUSION: High digit ratio predicts PCa in men undergoing prostate biopsy. Digit ratio >0,95 has 4-fold risk of PCa compared to men with digit ratio ≤0.95.
Assuntos
Dedos/anatomia & histologia , Neoplasias da Próstata/diagnóstico , Adulto , Idoso , Área Sob a Curva , Biópsia , Feminino , Hormônios Esteroides Gonadais/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Antígeno Prostático Específico/análise , Neoplasias da Próstata/diagnóstico por imagem , Curva ROC , Ultrassonografia , Ultrassom Focalizado Transretal de Alta IntensidadeRESUMO
OBJECTIVE: The purpose of the present study was to evaluate the length of telomeres in patients with bladder cancer using a quantitative flow cytometry (flow-FISH) technique. METHODS: Bladder washing samples from 51 patients with bladder cancer were obtained immediately before transurethral resection. The average length of telomere repeats was measured by flow-FISH, as previously reported. Results were expressed in molecular equivalents of soluble fluorochrome (MESF) units. RESULTS: Bladder washing specimens provided adequate cell numbers for flow-FISH in 49 cases. The TEL means were 1014.71, 2343.36, 5567 and 18267.57 for Ta, T1, T2 and T3/4 tumors, respectively. Regarding grade it was obtained a mean MESF value of 1379.46, 3391.29 and 15925.11 for G1, G2 and G3, respectively. ANOVA demonstrated statistically significant differences in stage (p: 0.014) and tumor grades (p: 0.012). In relation to ploidy, we found a mean MESF value of 2701.37 and 16085.44 MESF units for diploid and aneuploid cells, respectively. Significant difference (p: 0.003) was observed between both groups. CONCLUSION: To date, this is the first report wherein telomere length was measured using flow-FISH method in exfoliated cells in urine from patients with bladder cancer. Further investigations are required to demonstrate whether flow-FISH technique might be considered as a tumor marker of bladder cancer.