Giant median raphe cyst of the penis with diffuse melanosis of its epithelial lining.

Diffuse melanosis of the epithelial lining of an unusually large median raphe cyst of the penis is reported. Its light microscopic and ultrastructural features are described. The findings are discussed in the context of the published literature of genitourinary melanosis.

Hemorrhagic infarction of the kidney. An uncommon presentation of infiltrating urothelial carcinoma of the renal pelvis.

A case of infiltrating urothelial carcinoma of the renal pelvis presenting the pathologic picture of hemorrhagic infarction of the kidney is reported. The physiopathologic mechanisms of this presentation are discussed. It is suggested that urothelial carcinoma be included in the differential diagnosis during the work-up of renal lesions suspected of being papillary necrosis or hemorrhagic infarction.