主要成分为畸胎瘤的睾丸肿瘤，但在显微镜下胚胎癌和精原细胞瘤都可找到。与卵巢相比，睾丸中单纯良性畸胎瘤是非常少见的。
Here is a testicular neoplasm that is mostly teratoma, but embryonal carcinoma and seminoma were found microscopically. In contrast with the ovary, pure benign teratomas of the testis are very rare.
