Katherine Elizabeth Maturen MD, Presenter: Research support, General Electric Company

Ashish P. Wasnik MD, Abstract Co-Author: Nothing to Disclose

Andrew Sciallis MD, Abstract Co-Author: Nothing to Disclose

Aya Kamaya MD, Abstract Co-Author: Nothing to Disclose

After reviewing the exbibit, the learner should be able to: Enumerate organ systems where pathology may present as an adnexal mass Identify anatomic clues such as vascular supply and deviation of structures that enable correct identification of disease site Recognize important pathologies that may mimic ovarian lesions Understand the management significance of correctly identifying the organ of origin in pelvic masses

This exhibit will present a multimodality review of abdominal and pelvic disorders that may mimic ovarian carcinoma, with pathologic correlation and anatomic drawings to highlight selected cases.  Radiologists must be familiar with these entities in order to have an appropriately broad differential diagnosis and direct appropriate management. Organ systems giving rise to ovarian cancer mimics, and selected examples: Bowel and mesentery (lymphoma, diverticula, mucinous GI tumor, inflammatory disease) Neurogenic and presacral masses (meningocele, Schwannoma, tailgut cyst) Pelvic vasculature (aneurysm, vascular malformation) Uterus (pedunculated fibroid, rudimentary horn) Intraperitoneal conditions (leiomyomatosis, splenosis, peritoneal inclusion cyst) Retroperitoneal conditions (sarcoma, hematoma)

http://abstract.rsna.org/uploads/2014/14018696/14018696_8671.pdf

Maturen, K, Wasnik, A, Sciallis, A, Kamaya, A, A Lamb in Wolf's Clothing: Mimics of Ovarian Cancer.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14018696.html