Immunohistology of a sarcomatous mural nodule in an ovarian mucinous cystadenocarcinoma.

Mucinous tumors of the ovary are incidentally associated with ovarian sarcoma. Several cases of sarcoma-like mural nodules in ovarian mucinous tumors have been described previously, but only two well-documented cases of true sarcoma were reported. The purpose of this article is to report a case of sarcoma occurring in ovarian mucinous neoplasm, which differs histologically from the two cases described earlier. This case is the first of its kind with immunohistochemical characterization.