ABSTRACT
5-Aminolevulinic acid (ALA)-induced fluorescence cystoscopy has established itself in the detection of flat and/or small lesions. This is explained by the simple fact that there is increased uptake of ALA, altered activity of certain enzymes, and altered intracellular redistribution and storage of protoporphyrin IX (PPIX) in the malignant cells. Intracellular PPIX allows red fluorescence detection. In this preliminary study, the efficacy of 5-ALA-induced fluorescent urine cytology was compared with conventional cytology in the diagnosis of bladder tumours. In this prospective study, patients ≥18 years of age admitted to the department of urology with non-malignant conditions formed the controls and patients ≥18 years of age with imaging confirmed bladder tumours formed the study group. Freshly voided urine sample was collected from these patients and divided into two samples of 50 cc each. One of these samples was sent in for conventional cytology examination, whereas the other sample was sent in for 5-ALA fluorescent photo dynamic diagnosis. Conventional cytology and 5-ALA-induced fluorescent cytology were evaluated by the same pathologist. A total of 100 patients were included in the study of which 75 patients were controls and the remaining 25 were patients with bladder tumours. The sensitivity of conventional cytology and 5-ALA-induced fluorescent cytology was 64% and 100% respectively, whereas the specificity was 96% and 98.67% respectively. The sensitivity of conventional cytology was 61.19% in low-grade cancers as compared to 75% in high-grade cancers, whereas the sensitivity was 100% with 5-ALA-induced fluorescent cytology both in low- as well as high-grade cancers. Our study shows that 5-ALA-induced fluorescent cytology is highly sensitive test to diagnose bladder cancer and shows a significant difference especially in low-grade bladder cancer when compared to conventional cytology.
ABSTRACT
CONTEXT: Prostate cancer (PC) remains one of the most common cancers affecting men today. Thus, understanding the prevalence, disease characteristics, and changing demographics of Indian PC patients has emerged as an important aspect of study. AIMS: We aimed to present the case series of PC patients from single tertiary care center in North Karnataka. SETTINGS AND DESIGN: The study designed over a period of 8 years from 2007 to 2015 was conducted in the Department of Urology, KLES Dr. Prabhakar Kore Hospital, Belagavi, Karnataka. MATERIALS AND METHODS: A total of 471 newly diagnosed patients with PC from 2007 to 2015 were included in the study. Sociodemographic, clinical characteristics, radiological and histopathological findings of all patients were collected and analyzed for the risk of PC. STATISTICAL ANALYSIS USED: The statistical analysis used in this study was IBM SPSS Statistics software Inc., version 20.0. RESULTS: A total of 471 patients were diagnosed with PC, the mean age at presentation was 70 years, and mean prostate-specific antigen (PSA) level was 37.71 ng/mL. Digital rectal examination (DRE) was abnormal in 87.5% of 471 cases. Significant correlation was observed between PSA level and DRE (P = 0.0005), correlation of PSA and Gleason's score was P = 0.0006, and histopathological results showed high risk in patients (P = 0.0001). CONCLUSIONS: This is the first hospital-based study of PC incidence with clinical and histopathological features. PC remains an important public health problem with increasing incidence and significant burden on health-care resources in India.
