Bilateral Gonadoblastoma in a 13-Year-Old Female With Turner Syndrome and Y Chromosome: A Case Report

Document Type

Conference Proceeding

Publication Date

11-2023

Publication Title

American Journal of Clinical Pathology

Abstract

Introduction/Objective

Gonadoblastoma is a relatively rare type of ovarian tumor that has a high risk for patients with 45X/46XY. It is derived from the Y chromosome at its long arm GBY region, which contains the most likely candidate gene called testis-specific protein Y-encoded (TSPY). Methods/Case Report

In this case report, we present a case of a 13-year-old girl with Turner syndrome whose cytogenetic test showed 45X with monosomy X and a siodicentric Yq chromosome. As she carried a high risk for the development of gonadoblastoma due to the presence of the Y chromosome and clinically had premature ovarian failure, she received further imaging studies, which did not reveal obvious ovarian masses. She underwent resections of bilateral fallopian tubes and ovaries. Bilateral fallopian tubes were unremarkable. However, within the bilateral ovarian tissue, foci of gonadoblastoma were found (0.5 to 0.6 cm), composed of large round germ cells (confirmed by positive OCT 3/4 and SALL4 stains) intermingled with oval-shaped sex cord-stromal cells forming tubular/cribriform structures (confirmed by positive staining for inhibin, calretinin, and FOXL2). The stromal cells of gonadoblastoma, but not germ cells, were positive for androgen receptor staining, while both components were negative for estrogen receptor staining. No invasive germ cell tumor or sex cord tumor was present. Results (if a Case Study enter NA)

N/A Conclusion

The positive androgen receptor staining in stromal cells of the gonadoblastoma supports the view that the Y chromosome-driven androgen system may play a role in the development of gonadoblastoma in a bi-cellular pattern.

Volume

160

Issue

Suppl 1

First Page

S53

Comments

American Society of Clinical Pathology ASCP Annual Meeting, October 18-20, 2023, Long Beach, CA

Last Page

S54

DOI

10.1093/ajcp/aqad150.120

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