RT Journal Article SR Electronic T1 No ancillary finding is valid to distinguish a primary ovarian hepatoid carcinoma from metastatic hepatocellular carcinoma JF International Journal of Gynecologic Cancer JO Int J Gynecol Cancer FD BMJ Publishing Group Ltd SP 1691 OP 1694 DO 10.1136/ijgc-00009577-200607000-00032 VO 16 IS 4 A1 J. E. Kwon A1 S. H. Kim A1 N. H. Cho YR 2006 UL http://ijgc.bmj.com/content/16/4/1691.abstract AB Primary ovarian hepatoid carcinomas (POHC) are extremely rare. Especially rare are those with phenotypic properties of hepatocellular carcinoma (HCC) and an absence of clinical evidence of hepatic tumor. We report a case of a POHC with a common microscopic, immunophenotypic, and ultrastructural property of HCC in the absence of a liver mass. It is extremely difficult to differentiate POHC from metastatic HCC using any kinds of ancillary studies, with the exception of clinical identification of a hepatic tumor.