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睾丸胚細胞性腫瘍 Testicular germ cell tumors †
免疫染色による睾丸胚細胞性腫瘍の鑑別診断(右図)
WHO (2016) classification
Germ cell tumors derived from germ cell neoplasia in situ †
Noninvasive germ cell neoplasia
- Germ cell neoplasia in situ
- Specific forms of intratubular germ cell neoplasia
Tumors of a single histological type (pure forms)
- Seminoma
- Seminoma with syncytiotrophoblast cells
Nonseminomatous germ cell tumors
- Embryonal carcinoma
- Yolk sac tumor, postpubertal type
- Trophoblastic tumors
- Choriocarcinoma
- Nonchoriocarcinomatous trophoblastic tumors
- Placental site trophoblastic tumor
- Epithelioid trophoblastic tumor
- Cystic trophoblastic tumor
- Teratoma, postpubertal type
- Teratoma with somatic type malignancy
Nonseminomatous germ cell tumors of more than one histological type
- Mixed germ cell tumors
Germ cell tumors of unknown type
- Regressed germ cell tumors
Germ cell tumors unrelated to germ cell neoplasia in situ
Spermatocytic tumor
Teratoma, prepubertal type
- Dermoid cyst
- Epidermoid cyst
- Well differentiated neuroendocrine tumor (monodermal teratoma)
Mixed teratoma and yolk sac tumor, prepubertal type
Yolk sac tumor, prepubertal type