Adenocarcinoma of the ovary with fat-fluid level: CT appearance

A fat-fluid level on CT is reported for biopsy proven undifferentiated adenocarcinoma of the ovary. This uncommon radiographic finding has been described in association with germ cell tumors of the ovary, such as cystic teratomas and immature teratomas, but not in other ovarian histologies. The finding of a fat-fluid level on CT is, therefore, suggestive but not exclusive to cystic teratomas.