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Case of the Week

2020-25 / June 22 (Contributor: Daniel H Russell)

A man in his mid 30s presented with a testicular mass. Areas represented by the photomicrograph encompassed several low magnification fields. A minor percentage of seminoma was present, while the majority of the lesion was teratoma. WT1 was expressed by lesional tissue shown.

Click on the below thumbnails to enlarge photos.

2 photo(s) Updated on: June 18, 2020


1. What is the diagnosis?

   a. Mixed Germ Cell Tumor, Seminoma and Teratoma

   b. Yolk Sac Tumor

   c. Primitive Neuroectodermal Tumor (PNET)

   d. Well Differentiated Neuroendocrine Tumor (Carcinoid Tumor)

   e. Mixed Germ Cell Tumor, Seminoma and Teratoma, with Somatic-Type Malignancy

About GUPS

The Genitourinary Pathology Society (GUPS) was formed with the vision of advancing the care of patients with urologic diseases through enhancements of best practices, research, and education in the subspecialty of Urological Pathology.

GUPS is an official Companion Society of the United States and Canadian Academy of Pathology (USCAP).



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