Primary malignant melanoma of prostate.

Primary genitourinary melanoma accounts for less than one per cent of all cases of melanoma. Most cases attributed to the prostate actually originate from the prostatic urethra. Due to its infrequency, primary malignant melanoma of the genitourinary tract presents a difficult diagnostic and management challenge. We report a case of primary malignant melanoma of the prostate found during transurethral resection of the prostate.

Chronic spontaneous nephrocutaneous fistula associated with renal replacement lipomatosis.

Chronic spontaneous nephrocutaneous fistula is a rare renal disease. Renal replacement lipomatosis (RRL) is the result of the atrophy and destruction of renal parenchyma with massive increases in the amount of fat in the sinus and perirenal space. The 2 conditions can be associated because they may have the same etiology. Indeed, urolithiasis is the most common cause of these diseases. We report a case of chronic nephrocutaneous fistula associated with RRL due to both urolithiasis and renal tuberculosis.