MRI findings of a case of uterine tumor resembling ovarian sex-cord tumors coexisting with endometrial adenoacanthoma.

A case of uterine tumor resembling ovarian sex-cord tumors is reported. MRI was performed for the staging of the endometrial adenoacanthoma diagnosed by biopsy. A well-defined, slightly hyperintense mass with central hypointensity was noted in the myometrium on T2-weighted images. Pathological diagnosis of the myometrial mass was uterine tumor resembling ovarian sex-cord tumors. The central hypointense area was a leiomyomatous component. Adenoacanthoma was also confirmed. These features of coexisting tumors correlated well with the MRI findings.