DO_cancer_slim NCIthesaurus derives from sperm egg cell germ cell cancer seminoma DOID:4440 UMLS_CUI:C0036631 A germinoma that has_material_basis_in cells that make sperm and eggs. NCI:C9309 disease_ontology ICDO:9061/3 MESH:D018239 OMIM mapping confirmed by DO. [LS]. SNOMEDCT_US_2025_09_01:443675005 Seminoma, Pure