Medicine. Originally: any of various types of non-healing sore or ulcer (cf. canker, n. 1a). In later use (chiefly as mass noun): spec. malignant…

Medicine. The disease cancer; a cancer; (in later use) spec. any malignant tumour originating in epithelial tissue.

A malignant growth; = cancer, n. 3. rare.

Medicine. Originally: a hard tumour or swelling; an abnormally hard area of tissue, esp. in a glandular organ. In later use: spec. a cancer with a…

Pathology. A tumour composed of embryonic connective tissue. Now applied to almost any malignant tumour not derived from epithelial tissue.

Originally: †= melanosis, n. 1 (obsolete). Later: a pigmented growth; a tumour containing melanin or composed of melanocytes. Now: spec. (more fully…

(A) malignant melanoma.

a sarcoma containing glandular elements.

A malignant tumour arising in glandular epithelium or composed of cells forming gland-like structures; neoplastic disease of this type.

A type of malignant tumour originating (or believed to originate) in blood vessels.

A sarcoma containing lymphoid cells, so as to resemble a lymphatic gland.

A form of T-cell lymphoma that primarily involves the skin, typically presenting with non-specific, itchy, eczema-like patches and slowly (often…

(A) malignant melanoma, spec. one composed of spindle-shaped cells.

Originally: any fleshy tumour affecting a bone or producing (neoplastic or metaplastic) bone. Later: spec. a malignant mesenchymal tumour that…

a malignant tumour in which the parenchyma is composed wholly of differentiated cartilage.

a sarcoma containing psammoma bodies; a malignant meningioma.

The layer of cells surrounding a blastocyst, which attaches to, invades, and proliferates in the uterine lining in the early stages of…

a sarcoma of fatty tissue.

A malignant clonal proliferation of plasma cells, typically causing multiple lytic tumours in bones and usually associated with the presence of…

Pathology. Sarcoidosis; also, a tumour resembling a sarcoma.

a malignant sarcoma arising from smooth muscle.

A malignant tumour, usually of the brain or optic nerve, believed to be derived from spongioblasts.

= osteosarcoma, n.

a malignant tumour composed chiefly of sympathoblasts.

The type of sarcoma composed of lymphoreticular or reticuloendothelial cells; an instance of this.

Carcinoma at a pre-invasive stage in which malignant cells are confined to the epithelium, with no extension through the basement membrane or into…

Medicine. A malignant neoplasm.

ˌteratocarciˈnoma n. Pathology a malignant teratoma containing carcinomatous elements, occurring chiefly in the testis.

a malignant tumour composed chiefly of sympathoblasts.

a malignant tumour composed chiefly of sympathogonia.