Rhabdomyosarcoma coexistent with ovarian mucinous cystadenocarcinoma: a case report.

This report describes a case of ovarian mucinous cystadenocarcinoma associated with rhabdomyosarcoma. Several cases of sarcoma-like mural nodules in ovarian mucinous tumor have been described previously, but only three well-documented cases of true sarcoma have been reported. The first case was a fibrosarcoma associated with a mucinous cystadenoma; the second was an undifferentiated sarcoma in a mucinous cystadenocarcinoma; and the third was a fibrosarcoma occurring in a mucinous cystadenocarcinoma. The occurrence of rhabdomyosarcoma in mucinous cystadenocarcinoma, as reported here, is to our knowledge the first case reported of this unusual combination of tumors.