Korean J Urol.  1997 Jan;38(1):97-101.

A Case of Malignant Leydig Cell Tumor

• Lee JJ
• Park CG
• Kim SJ
• Shin KY
• Park YW
• Park HY
• Kim DH

Abstract

Malignant Leydig cell tumor of the testis is a very rare condition. A case of the malignant Leydig cell tumor arised from the right testis of seventy-year-old man is reported. The patient presented painless, 4 x 8 x 5 cm sized, mass without endocrinological manifestations and the mass was removed and diagnosed as a malignant Leydig cell tumor histologically showing frequent mitosis, pleomorphic cells in trabecular pattern with nuclear atypia, clear cells with foamy cytoplasm, and vascular invasion of tumor emboli in tumor capsule. No Reinke`s crystalloid was seen. The patient is now being followed in disease free state.

Keyword

Malignant Leydig cell tumor; Testis

MeSH Terms

Cytoplasm
Humans
Leydig Cell Tumor*
Mitosis
Testis