(carcinoma, malignant) A malignant epithelial neoplasm.

A cancerous tumor that develops in the tissue that lines the organs of the body (the epithelium).

A malignant neoplasm made up of epithelial cells tending to infiltrate the surrounding tissues and give rise to metastases. It is a histological type of neoplasm and not a synonym for "cancer."

A malignant tumor arising from epithelial cells. Carcinomas that arise from glandular epithelium are called adenocarcinomas, those that arise from squamous epithelium are called squamous cell carcinomas, and those that arise from transitional epithelium are called transitional cell carcinomas. Morphologically, the malignant epithelial cells may display abnormal mitotic figures, anaplasia, and necrosis. Carcinomas are graded by the degree of cellular differentiation as well, moderately, or poorly differentiated. Carcinomas invade the surrounding tissues and tend to metastasize to other anatomic sites. Lung carcinoma, skin carcinoma, breast carcinoma, colon carcinoma, and prostate carcinoma are the most frequently seen carcinomas.

Cancer that begins in the skin or in tissues that line or cover internal organs.

Malignant new growth arising from epithelial cells tending to infiltrate the surrounding tissues and give rise to metastases.

Carcinoma, a cancerous growth of surface (epithelial) tissues of the skin, digestive tract, blood vessels, and various organs. Carcinoma cells tend to invade surrounding healthy tissues and give rise to secondary growths (metastases) distant from the original tumour. In addition to the skin and...