Occurrence of primary renal angiosarcoma in brothers.

Two brothers, 3 years apart in age, developed angiosarcoma of the left kidney at ages 52 and 69. Both rapidly developed systemic metastasis and died 6 weeks and 3 months, respectively, after nephrectomy. No common carcinogen or hereditary or other etiologic factor was identified.

Hypercalcaemia due to hyperparathyroidism in a patient with chronic renal failure and renal carcinoma.

A 65-year-old woman with a history of a left heminephrectomy for renal carcinoma developed hypercalcaemia 11 years after the operation. The same kidney was found to contain a recurrent renal carcinoma. After the radical nephrectomy of the left kidney, hypercalcaemia remitted but reappeared 11 months later.