This course provides a practically-oriented, case-based review of non-epithelial ovarian tumors, including germ cell tumors, sex cord-stromal tumors, and other non-epithelial tumors of the ovary. These tumors comprise a morphologically diverse array of benign and malignant entities which can be difficult to diagnose because of their relative infrequency and their overlapping morphologic features with some epithelial and non-epithelial tumors. Their predilection for children, young women, and pregnant women, as well as their association with systemic syndromes, further complicates their diagnosis.

The target audience of this course is practicing pathologists as well as pathology trainees. The course will emphasize practical differential diagnosis, pitfalls in frozen section evaluation, an update in novel immunohistochemical diagnostic markers, and an update in prognostic variables.

Upon completion of the course, participants should be able 1.) to recognize major sub-types of ovarian germ cell tumors, sex cord-stromal tumors and their mimics 2.) to be aware of pitfalls in frozen section evaluation; 3.) to appropriately apply and interpret current immunohistochemical markers to confirm diagnosis of these tumors and 4.) to understand what prognostic information should be reported in the diagnosis of these tumors.

Virtual slides of the cases and relevant immunostains will be available to review on the USCAP website prior to the course. A text syllabus and copy of PowerPoint presentations will be provided at the meeting. After the meeting, all course registrants will have access to the PowerPoint presented at the Annual Meeting along with the text portion of the syllabus on the USCAP website. A Self-Assessment Module (SAM) consisting of multiple choice questions will also be available after the meeting on the USCAP website for participants who wish to obtain SAM credit.

(NEW COURSE) This course may be used for CME credits or SAM credits.