Sentinel loop

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Sentinel loop

The Sentinel loop (pronunciation: /ˈsɛntɪnəl luːp/) is a medical term used in radiology. It refers to a localized ileus (pronounced: /aɪˈliːəs/) from nearby inflammation, often seen on an abdominal radiograph.

Etymology

The term "sentinel" is derived from the Latin word "sentinela", meaning a guard or watchman. In this context, it refers to the loop's role in indicating or guarding against a potential problem. The term "loop" is used to describe the shape of the dilated segment of the bowel.

Definition

A Sentinel loop is a sign of localized ileus, or a lack of movement somewhere in the intestines that can lead to a buildup of gas and fluids. When viewed on an abdominal radiograph, it appears as a loop or coil of bowel, usually in the upper abdomen, that is dilated and filled with gas. This is often a response to nearby inflammation or irritation, such as pancreatitis, cholecystitis, or appendicitis.

Related Terms

  • Ileus: A disruption in the normal propulsive ability of the gastrointestinal tract.
  • Abdominal radiograph: A specific form of radiography or X-ray imaging used to assess the abdominal area.
  • Pancreatitis: Inflammation of the pancreas.
  • Cholecystitis: Inflammation of the gallbladder.
  • Appendicitis: Inflammation of the appendix.

See Also

External links

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