<unk> , previously called<unk>  seminoma, is a neoplasm of the testis (i.e. a tumour of the testis), and classified as a germ cell tumour. The name of the tumour comes from the similarity (under the microscope) between the small cells of the tumour and secondary spermatocytes.
Spermatocytic tumor
Granulosa cell tumour
Leydig cell tumour
Sertoli cell tumour
Germ cell tumor
Pineal gland cyst
Theca lutein cyst
Hidrocystoma