MR Findings of Extrauterine Müllerian Adenosarcoma Associated with Deep Pelvic Endometriosis

as a tumor composed of admixed benign epithelial and malignant nonepithelial components, and this tumor usually develops as a solitary lesion in the uterine corpus (1). These neoplasms can develop in the endometrial tissue as well as in the ectopic foci of endometriosis. Rare extrauterine müllerian adenosarcomas have been reported to arise in the ovary, cervix, vagina, pelvis, bladder and colon (2, 3). However, to the best of our knowledge, there are scarce reports on the MR findings of extrauterine müllerian adenosarcoma arising from deep pelvic endometriosis. We describe here a case of a large infiltrating extrauterine müllerian adenosarcoma arising from recurrent deep pelvic endometriosis and we discuss the MR findings.