Testicular Embryonal Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A malignant germ cell neoplasm arising from the testis. It is composed of primitive epithelial cells arranged in solid, papillary, and glandular configurations. Most patients present with a testicular mass, which may be associated with pain. More than half of the patients have metastatic disease at diagnosis. The form of treatment following radical orchiectomy is stage dependent.

**Synonyms:** - Embryonal Carcinoma of Testis - Embryonal Carcinoma of the Testis