Adrenal myelolipoma is a rare, benign, and biochemically nonfunctioning tumor. Most patients with adrenal myelolipoma are asymptomatic and the condition is discovered incidentally at autopsy. Review of the literature reveals 70 patients with surgically documented adrenal myelolipoma. We report 7 additional patients with 8 adrenal myelolipomas, of whom 5 underwent surgical removal because of tumor size, unusual imaging features or symptomatology. Of our patients 4 had symptomatic lesions requiring surgical removal, while 1 had an adrenal myelolipoma that was discovered intraoperatively. Of the remaining 2 patients 1 had a small (3 cm.) lesion discovered incidentally on excretory urography and 1 had bilateral adrenal myelolipoma discovered incidentally on computerized tomography.

Unilateral renal cystic disease (URCD) is a rare, nonfamilial, nonprogressive, unilateral cystic disorder of the kidney. Very few adults with this condition have been documented [1-4]. We describe a case with a 30 year radiologic follow-up. Absence of a family history of cystic renal disease, benign clinical course through adulthood, and limitation of the process to one kidney distinguish this condition from asymmetric autosomal dominant polycystic kidney disease (ADPKD).

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