Peritoneal ovarian metastases simulating liver parenchymal metastases.

Ovarian carcinoma frequently metastasizes to the peritoneum, both locally in the pelvis and elsewhere. Computed tomography (CT) has a limited ability to identify peritoneal implants with a diameter of 2 cm or less. Three cases of subphrenic, diaphragmatic peritoneal implants, preoperatively at CT thought to represent liver parenchymal metastases, are presented. The difficulty in the differentiation of diaphragmatic peritoneal implants from metastases to the capsule and parenchyma of the liver is discussed. To achieve a radical liver resection in patients with ovarian carcinoma, metastatic peritoneal implants must be excluded during operation.