Objective: The information gathered by the various stone analysis reports is valuable to both the urologist and the patient. The study aimed to compare a urinary stone analysis devise kit and determine its sensitivity and specificity with the chemico-quantitative analysis offered by another tertiary hospital. Materials and Methods: A total of 25 urinary stone samples were collected from patients seen in a government chartered tertiary hospital from January to September 2009. The stones were submitted to the study's qualitative stone analysis and for the chemico-quantitative analysis. Results: The two analyses have identical results in reporting for the presence of oxalates and phosphates. Calcium was determined in almost all of the stones by the devise kit except for two that were seen from the standard. Six out of the 7 stones with uric acid components were detected by this study. Overall, the sensitivity of the device kit in determining for the presence of calcium, oxalate, phosphate and uric acid were 92%, 100%, 100% and 86%, respectively. Conclusion: The urinary stone analysis devise kit formulated is simple and cost effective and has high sensitivity in determining for the presence of calcium, oxalate, phosphate and uric acid components. Based on this study, this devise kit is recommended in the in-patient and out-patient services as well as in other diagnostic laboratories.

Giant urethral stones in male are rare clinical entities and majority of them migrate from the upper tract. Rarely, urethral stones formed primarily in the urethra and are usually associated with urethral strictures or diverticula. We report a 56-year-old man with giant urethral stone associated with extremely rare urethral cancer. The etiologic factors, pathogenesis, clinical presentation, complications and management of giant urethral calculi are reviewed.