neoplasm (disease) A benign or malignant tissue growth resulting from uncontrolled cell proliferation. Benign neoplastic cells resemble normal cells without exhibiting significant cytologic atypia, while malignant cells exhibit overt signs such as dysplastic features, atypical mitotic figures, necrosis, nuclear pleomorphism, and anaplasia. Representative examples of benign neoplasms include papillomas, cystadenomas, and lipomas; malignant neoplasms include carcinomas, sarcomas, lymphomas, and leukemias. COHD:438112 DOID:14566 EFO:0000616 HP:0002664 ICD10:C00.D48 ICD9:140-239.99 ICD9:239.8 ICD9:239.9 MESH:D009369 MONDO:0005070 NCIT:C3262 ONCOTREE:OTHER SCTID:55342001 UMLS:CN236628 cell process disease disease of cellular proliferation neoplasia neoplasm neoplastic disease neoplastic growth other neoplasm tumor tumor disease neoplastic disease or syndrome