Category: A

Silicosis combined with anthracosis, in coal miners.  

Radiographic appearance of an air-filled bronchus as it passes through an area of increased anatomic density as in pulmonary edema and pneumonia.  

An abnormal connection between an artery and the venous system.  

A normal or abnormal direct connection between arterial and venous circulation. An example of a normal anatomical shunt is the bronchial and thebesian vein connection.  

A condition that causes shoulder pain, with restricted movement even though there is no obvious intrinsic shoulder disease. This may follow bursitis or tendonitis of the shoulder or may be associated with systemic conditions such as chronic pulmonary disease, myocardial infarction, or diabetes mellitus. Prolonged immobility of the arm favors development of adhesive capsulitis. The…

Shock due to an overdose of a general anesthetic. The anesthetic should be immediately withheld and oxygen, mechanical ventilation, and vapor drugs should be given.  

A major change in the genetic makeup of an organism, usually resulting from gene reassortment or occurring when different species share genetic material. The influenza virus type A is the most common example of an organism that undergoes antigenic shift. This process may create a new pathogen against which there is no immunity in the…

A myelin sheath or a neurilemma.  

An antibody-containing serum used to reduce rejection of transplanted organs and tissues. Its immunosuppressive effects are directed against B and T lymphocytes, the cells that promote the formation of antibodies and of cell-mediated immunity.  

Any series of organic compounds containing the benzene ring.