placenta cancer 胎盘癌 choriocarcinoma 绒毛膜癌 Chorioepithelioma DOID:3594 ICD10CM:C58 MESH:D002822 NCI:C2948 SNOMEDCT_US_2016_03_01:188188009 SNOMEDCT_US_2016_03_01:189444004 SNOMEDCT_US_2016_03_01:44769000 UMLS_CUI:C0008497 disease_ontology 绒癌