Choriocarcinoma and Variants Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Germ cell tumor composed of mixture of mononucleate trophoblastic cells and multinucleate syncytiotrophoblasts Clinical…

General Concepts, Germ Cell Tumors Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Schematic diagram of testis and paratestis is shown. The testicular parenchyma is separated by fibrous…

Large Cell Calcifying Sertoli Cell Tumor Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Variant of Sertoli cell tumor with large epithelioid cells and peculiar…

Spermatocytic Seminoma Steven S. Shen, MD, PhD Mahul B. Amin, MD Jae Y. Ro, MD, PhD Key Facts Terminology Germ cell tumor composed of 3 cell types of variable sizes…

Tuberculous Epididymo-orchitis Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Infection of testis and epididymis due to Mycobacterium tuberculosis Etiology/Pathogenesis Mycobacterium tuberculosis Most tuberculous epididymo-orchitis…

Epidermoid and Dermoid Cysts Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Specialized benign form of testicular cyst with keratinizing squamous lining without skin adnexal…

Carcinoid Tumor Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Well-differentiated tumor of testis with neuroendocrine differentiation Clinical Issues Majority (70%) are pure carcinoid &/or…

Immunohistochemistry, Prostate Gladell P. Paner, MD Danielle E. Westfall, MD Mahul B. Amin, MD Prostatic Adenocarcinoma and Its Mimics Antibody Adenocarcinoma Seminal Vessel & Ejaculatory Duct Nephrogenic Adenoma Cowper Gland…

Infections Steven S. Shen, MD, PhD Jae Y. Ro, MD, PhD Key Facts Terminology Inflammatory process of testis or epididymis due to microorganisms (bacteria, fungus, virus, etc.) Etiology/Pathogenesis Bacteria Virus…