Category: S

In radiation therapy, the ratio between the primary and scatter radiation in air at the point of calculation along the central ray of the treatment beam. Tables of values and irregular field algorithms are critical for devising patient treatment plans by using computer systems.  

The diffusion of electromagnetic radiation when it strikes an object.  

A mass of inspissated feces in the colon or rectum, resembling an abdominal tumor.  

Scientific study and analysis of the feces.  

A fulminant and usually lethal form of scarlatina.  

Scarlatina with hemorrhage into the skin and mucous membranes.  

A severe form of scarlatina with extensive necrosis and ulceration of the pharynx and in some cases with peritonsillar abscess.  

A newborn assessment finding in which the infant’s elbow crosses the body midline without resistance as the examiner draws the arm across the chest to the opposite shoulder. This is characteristic of preterm infants born before 30 weeks gestation.  

Concerning the scapula and clavicle. Related to the shoulder blade and collarbone.  

Surgical excision of the scapula. Surgical excision of a portion or the entire shoulder blade.