副腎嚢腫の1例

Abstract

A 30-year-old woman visited our hospital with the chief complaints of epigastric distension and right back pain. Laboratory findings including hormonal studies were within normal ranges. Plain film of the abdomen showed a calcificaticn in the right upper quadrant. Intravenous pyelogram demonstrated downward displacement of the right kidney by a large suprarenal mass. Finally, the diagnosis of the right adrenal cyst was established by echcgraphy, CT scan, scintigraphy and angiography. On Oct. 20, 1980, the right adrenal cyst with normal adrenal tissue was resected. The gross specimen was 8 by 9 by 12 cm in size and contained 350 ml of brown opaque fluid. Histological study revealed that the wall of the cyst was replaced by collagen fibers and so this adrenal cyst was classified to pseudocyst of the adrenal gland. The fluid of the cyst contained higher concentrations of cortisol and corticosterone than plasma but the same of cathecolamine and aldosterone. These results suggested that this cyst was derived from the adrenal cortex.