No abstract

Squamous cell carcinoma of the skin is an extremely rare cause of hypercalcemia associated with malignant neoplasms. The case of a patient with extensive squamous cell carcinoma of both buttocks and thighs, with severe hypercalcemia is reported. The data presented indicate secretion of a humoral factor by the tumor, producing hypercalcemia.

Plasmacytoma, a localized extramedullary mass of plasma cells, is one manifestation of multiple myeloma. Renal plasmacytomas are rare lesions with neovascularity on arteriogram. This may cause confusion with the much more common renal cell carcinoma unless the clinician is aware of this entity. A case is presented, the literature reviewed, and problems in management discussed.