CONDITIONS SIMULATING OVARIAN NEOPLASMS II
Mesenteric cyst. Rarely, a cyst of the mesentery of the transverse colon or small bowel or of the omentum may reach large proportions and simulate a pedunculated, freely movable, extrapelvic ovarian cyst.
Polycystic kidney. The multilocular cystic replacement of the renal cortex and medulla may reach a huge size. On abdominal palpation the possibility of a large, adherent ovarian cyst may be suggested. Intravenous pyelography may demonstrate the bilateral renal involvement and characteristic elongation and spreading apart of the calyces. Abdominal ultrasonography will demonstrate the classic cystic nature of the kidneys and cysts, if present in the liver.