disease arises from structure plasma cell neoplasm of mature B-cells plasma cell neoplasm A clonal proliferation of immunoglobulin-secreting plasma cells. This category includes plasma cell myeloma, plasma cell leukemia, plasmacytoma, monoclonal immunoglobulin deposition disease, and monoclonal gammopathy of undetermined significance. COHD:443743 DOID:6536 EFO:0000200 ICD9:238.6 MESH:D054219 MONDO:0004959 NCIT:C4665 Orphanet:98282 SCTID:415111003 See https://github.com/NCI-Thesaurus/thesaurus-obo-edition/issues/39 UMLS:C1959632 plasma cell disorder plasma cell dyscrasia plasma cell neoplasm plasma cell tumor plasma cell tumor, malignant plasma cell tumour plasmacytic neoplasm plasmacytic tumor plasmacytic tumour neoplasm (disease)