Naming Neoplasms

adenoma

epithelial, benign, glandular

‘oma’ papilloma

epithelial, benign, non-glandular

adenocarcinoma

epithelial, malignant, glanular

carcinoma

epithelial, malignant, non-glandular

‘oma’

name is preceded by ‘benign’ or ‘malignant’

neuroectoderm

teratoma

name is preceded by ‘benign’ or ‘malignant’

>1 type of tissue

blastoma

name is preceded by ‘benign’ or ‘malignant’

embryonal

‘oma’

mesenchymal, benign

sarcoma

mesenchymal, malignant

mast cell tumors

mostly mastocytomas (benign mesenchymal neoplasms) with a smaller proportion of mast cell sarcomas (malignant mesenchymal neoplasms)

adenocarcinomas

abbreviated to carcinomas since its easier to say than adenocarcinoma

Lymphosarcomas

there are no benign neoplasms of lymphocytes, so these are abbreviated to ‘lymphoma’

leukemia

a bone marrow sarcoma has released detectible numbers of circulating neoplastic cells

carcinoma in situ

a malignant epithelial neoplasm is early in development, and despite being a malignant neoplasm, the neoplastic cells have not yet penetrated the basement membrane