Radiology, Vol 158, 649-652, Copyright © 1986 by Radiological Society of North America

ARTICLES

Serous carcinoma of the ovary: CT identification of metastatic calcified implants

DG Mitchell, MC Hill, S Hill and C Zaloudek

The metastasis along peritoneal surfaces of serous cystadenocarcinoma, the most common ovarian malignancy, occurs early and is present in most patients at the time of clinical diagnosis. In many patients, however, computed tomography (CT) is unable to demonstrate peritoneal metastases because of their small size and similarly has been unable to demonstrate metastases in normal sized lymph nodes. Serous cystadenocarcinoma contains histologic calcification in approximately 30% of cases; thus, CT scans were retrospectively reviewed in 15 patients with pathologically proved stage III or IV disease to detect calcified peritoneal metastases. Six patients had calcified peritoneal implants, five of which had perihepatic calcifications. One of the five also had calcified lymphatic metastases, some of which were in normal sized nodes. In three of these five, the examination was otherwise normal. Search for these calcifications should improve the sensitivity of CT in diagnosing metastases from ovarian carcinoma.

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