The Worrisome Nodule That Wasn't - MRI Characterization of a Mature Cystic Teratoma with Rokitansky Nodule

Authors

Mehdi Salmane, Alia Yassine Kassab, Lina Lasri, Lina Belkouchi, Siham El Haddad, Nazik Allali, Latifa Chat

Journal Information

Journal: Medpeer Publisher

ISSN: 3066-2737

Volume: 3

Issue: 6

Date of Publication: 2026/06/04

DOI: 10.70780/medpeer.000QGTA

Abstract

Mature cystic teratoma is the most common benign ovarian germ-cell tumor and typically exhibits characteristic imaging features that allow confident diagnosis. However, the presence of a Rokitansky nodule may occasionally raise concern for malignant transformation. We report the case of a 42-year-old woman in whom pelvic ultrasound revealed a left adnexal cystic mass. Pelvic MRI demonstrated a fat-containing ovarian lesion with a mural Rokitansky nodule showing enhancement and diffusion restriction but without imaging features suggestive of malignancy. The lesion was classified as O-RADS MRI 2 and diagnosed as a mature cystic teratoma. This case highlights the value of multiparametric MRI in distinguishing benign dermoid cysts from lesions requiring more aggressive management.

Keywords

Mature cystic teratoma, Dermoid cyst, Rokitansky nodule, O-RADS MRI, Magnetic resonance imaging.