Dictionary

carotid Pertaining to the carotid artery and the area near that key artery, which is located in the front of the neck.

carcinoma, large cell See large cell carcinoma.

carcinoma, squamous cell Cancer that begins in squamous cells, which are thin, flat cells that resemble fish scales. Squamous cells are found in the tissue that forms the surface of the skin and the lining of some organs of the body. See also carcinoma in situ, squamous cell.

carcinoma, transitional cell Cancer that develops in the lining of the renal pelvis, ureter, or bladder.

carcinoma in situ Cancer that has stayed in the place where it began and has not spread to neighboring tissues (for example, squamous cell carcinoma in situ).

carcinoma in situ, squamous cell An early stage of skin cancer that develops from squamous cells (the flat, scale-like cells in the outer layer of the skin). The hallmark is a persistent, progressive, slightly raised, red, scaly, or crusted plaque that may occur anywhere on the skin surface or on mucosal surfaces, such as in…

carcinoma of the breast, infiltrating ductal One of several recognized specific patterns of cancer of the breast, so named because it begins in the cells that form the ducts of the breast. It is the most common form of breast cancer. On a mammogram, invasive ductal carcinoma is usually visualized as a mass with fine…

carcinoma of the breast, infiltrating lobular The second most common type of invasive breast cancer. Infiltrating lobular carcinoma starts in the glands that secrete milk (lobules). On a mammogram, a lobular carcinoma can look similar to a ductal carcinoma, appearing as a mass with fine spikes radiating from the edges (spiculation). Infiltrating lobular carcinoma can…

cardiac Having to do with the heart.

cardiac aneurysm See aneurysm, cardiac.

cardiac arrest A heart attack in which the heart suddenly stops pumping sufficient blood. A cardiac arrest that results in the death of heart muscle is referred to as a myocardial infarction. See also myocardial infarction, acute.

Cardiac arrest is a medical emergency that occurs when the heart suddenly stops beating effectively, leading to the cessation of blood flow to the brain and other vital organs. This results in a loss of consciousness and the absence of a pulse. If not treated immediately, cardiac arrest can lead to death within minutes. Causes…