Category: At-At

Atypical teratoid rhabdoid tumor (ATRT) is a very rare, fast-growing central nervous system (brain or spinal cord) tumor. Most ATRTs are linked to changes in a gene known as SMARCB1 (also called INI1). Symptoms and signs depend on the exact location of the tumor within the brain and can include morning headaches, vomiting, problems with balance and coordination, and increased…

An altered expression of measles, AMS begins suddenly with high fever, headache, cough, and abdominal pain. The rash may appear 1 to 2 days later, often beginning on the limbs. Swelling (edema) of the hands and feet may occur. Pneumonia is common and may persist for 3 months or more. AMS occurs in persons who were incompletely immunized against measle. This may happen if a person…

Unusual, or not fitting a single diagnostic category.

A weakened, less vigorous virus. An attenuated virus may be used to make a vaccine that is capable of stimulating an immune response and creating immunity, but not of causing illness.

Attenuated familial adenomatous polyposis. Familial adenomatous polyposis (FAP) is an inherited disorder characterized by cancer of the large intestine (colon) and rectum. People with the classic type of familial adenomatous polyposis may begin to develop multiple noncancerous (benign) growths (polyps) in the colon as early as their teenage years. Unless the colon is removed, these polyps will become malignant (cancerous). The average age at…

An inherited predisposition to colorectal cancer characterized by fewer than 100 adenomatous polyps in the colon and rectum. It is said to be attenuated because there are fewer polyps than in classic familial adenomatous polyposis (FAP). People with attenuated familial adenomatous polyposis (AFAP) also tend to be older at the diagnosis of their polyps (average age of 44 years)…

Weakened, diluted, thinned, reduced, weakened, diminished. The use of “attenuated” in medicine is not new. In the 16th century, eating dried figs was claimed to attenuate the body fluids. Now “attenuated” refers to procedures that weaken an agent of disease (a pathogen). An attenuated virus is a weakened, less vigorous virus. A vaccine against a viral disease…

To weaken, or to make or become thin.

Relating to attention. The term is used in psychology and child development as, for example, early television exposure has been found to be associated with attentional problems at age 7.

Attention getting is not a simple automatic act. It requires complex active thought processing. The types of stimuli that are attention getting depend on past experience, individual reactivity, and what a person considers to be important. A hungry commuter may pay closer attention to the smell of food than to the surrounding sights and sounds…