What is thumbprint sign?
In radiology, the thumbprint sign, or thumbprinting, is a radiologic sign found on a radiograph that suggests the diagnosis of either epiglottitis or intestinal ischemia.
What is mural stratification?
The term mural stratification denotes the visualization of bowel wall layers at CT (4,18–20). At CT enterography, the edematous bowel wall has a trilaminar appearance, with enhanced outer serosal and inner mucosal layers and an interposed submucosal layer of lower attenuation (Fig 2).
How do you diagnose ischemic colitis?
Colonoscopy. This test, which provides detailed images of your colon, can be helpful in diagnosing ischemic colitis. Colonoscopy can also be used to check for cancer, and to see how well a treatment worked. Stool analysis, to rule out infection as a cause of your symptoms.
What does ischemic colitis look like on CT scan?
The most common CT finding in bowel ischemia is bowel wall thickening, although it is nonspecific (,2). The thickened bowel wall is sometimes associated with the target sign, alternating layers of high and low attenuation within the thickened bowel wall, which results from submucosal edema or hemorrhage.
What is the steeple sign in croup?
The steeple sign represents the glottic and subglottic narrowing of the airway typically seen in children with croup. In radiology, the narrowing of airway lumen alters the appearance of tracheal air column, which resembles a church steeple or a steeply pitched roof.
What’s ischemic colitis?
Ischemic colitis occurs when blood flow to part of the large intestine (colon) is temporarily reduced, usually due to constriction of the blood vessels supplying the colon or lower flow of blood through the vessels due to low pressures.
What does Hyperenhancement mean?
Filters. Greater than normal enhancement. noun. 1.
What is segmental mural Hyperenhancement?
Segmental Mural Hyperenhancement: Stratified mural hyperenhancement is defined as inner hyperenhancement (bilaminar) or both the inner and outer (trilaminar): Combination of submucosal edema, granulation tissue, intramural fat deposition, fibrosis, or inflammatory infiltration.
What is ischemic colon?
Colonic ischemia describes a disorder that develops when blood flow to the colon is partially or completely blocked. The blockage usually occurs in one or more arteries that supply the large intestine with blood. Colonic ischemia can be acute (start suddenly) or chronic (develop over time).
What is ischemia in the colon?
Does ischemic colitis show on CT scan?
For patients who present with symptoms of ischemia, a CT scan of the abdomen with oral and IV contrast and laboratory testing can be performed. Manifestations of ischemic colitis on CT include colonic wall thickening, edema, thumbprinting, bowel dilatation, and effusion of intestinal circumference.
What is the steeple sign indicative of?
The steeple sign, also called the wine bottle sign, refers to the tapering of the upper trachea on a frontal chest radiograph reminiscent of a church steeple. The appearance is suggestive of croup, which should be obvious clinically.