DO_rare_slim DO_cancer_slim NCIthesaurus myeloproliferative neoplasm polycythemia vera ICD9CM:207.1 UMLS_CUI:C0152272 DOID:8997 A myeloproliferative neoplasm characterized by erythroid hyperplasia, myeloid leukocytosis, thrombocytosis, and splenomegaly. SNOMEDCT_US_2025_09_01:188753004 ICDO:9950/3 MESH:D011087 NCI:C3336 GARD:7422 DOID:11868 ICD9CM:238.4 MIM:263300 SNOMEDCT_US_2025_09_01:154644004 UMLS_CUI:C0032463 disease_ontology ICD10CM:D45 OMIM mapping confirmed by DO. [SN]. Osler-Vaquez syndrome Polycythaemia rubra vera Proliferative polycythaemia chronic erythremia