E1664. Benign and Malignant Ovarian Teratomas: Emphasis on MRI and Radiologic-Pathologic Correlation
  1. Justine Lee; Icahn School of Medicine at Mount Sinai
  2. Indira Laothamatas; Icahn School of Medicine at Mount Sinai
  3. Eric Fang; Icahn School of Medicine at Mount Sinai
  4. Amita Kamath; Icahn School of Medicine at Mount Sinai
  5. Michael King; Icahn School of Medicine at Mount Sinai
While histopathologic evaluation remains the gold standard for diagnosis of malignant teratomas, imaging proves useful in distinguishing between benign and malignant lesions. Ultrasound and CT are often used in the initial evaluation of adnexal mass, however advanced multiparametric MR is superior in further characterizing soft tissue, enhancement, and local invasion, aiding the gynecologist and contributing to important treatment planning.

Educational Goals / Teaching Points
Comprehensive illustrative review of the spectrum of magnetic resonance (MR) imaging findings, as well as pertinent clinical and histopathologic correlation, encompassing benign and malignant ovarian teratomas (including immature cystic teratomas and malignant degeneration of mature cystic teratomas).

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Illustrative MR examples of both benign and malignant teratomas with corresponding histopathologic slides will be included in this exhibit, in which we will demonstrate the superior role of MR for soft tissue characterization, lesion enhancement, extracapsular/local invasion, and locoregional/peritoneal metastasis. Findings are particularly important given the predilection for aggressive local invasion and metastasis seen with malignant lesions.

Through this exhibit, viewers will develop an understanding of the key distinguishing MR imaging features of benign and malignant teratomas, with the goal of recognizing suspicious features and achieving accurate diagnosis.