String sign

String sign is a term used in radiology and gastroenterology to describe the appearance of a narrowed, elongated channel, often seen in conditions such as Crohn's disease. The term is derived from the similarity in appearance to a string on imaging studies.

Overview

The string sign is a radiographic finding that is suggestive of a long, narrow, tubular structure, often seen in the small intestine. It is typically associated with conditions that cause inflammation and narrowing of the intestinal lumen, such as Crohn's disease. However, it can also be seen in other conditions such as intestinal obstruction and gastrointestinal stromal tumors (GISTs).

Clinical Significance

In the context of Crohn's disease, the string sign is a significant finding as it indicates the presence of strictures or narrowing in the small intestine. This can lead to symptoms such as abdominal pain, bloating, and changes in bowel habits. The presence of a string sign on imaging studies may guide the management and treatment of patients with Crohn's disease.

In other conditions such as intestinal obstruction or GISTs, the string sign may also be seen. In these cases, it indicates the presence of a blockage or a mass in the intestine, which may require surgical intervention.

Diagnosis

The string sign is typically identified on barium swallow or computed tomography (CT) scan of the abdomen. These imaging studies allow for the visualization of the intestinal lumen and can identify areas of narrowing or obstruction.

Treatment

The treatment of conditions associated with the string sign depends on the underlying cause. In Crohn's disease, treatment may involve medications to reduce inflammation and prevent further damage to the intestine. In cases of intestinal obstruction or GISTs, surgical intervention may be required.

See Also

• Crohn's disease
• Intestinal obstruction
• Gastrointestinal stromal tumor
• Radiology
• Gastroenterology

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