To briefly review the mechanism and clinical features of intussusception in the adult 2.
To describe typical imaging findings 3.
To review the most common causes of bowel intussusception in adults according to location and describe their imaging findings.
Bowel intussusception is uncommon in adults,
representing only 5% of all intussusceptions and 1% of patients with bowel obstruction.
In contrast to children,
there is a demonstrable cause in 70-90% of the situations,
most commonly a neoplasm.
Malignant lesions are more frequent in the colon,
whereas benign tumors prevail in the small bowell. They are classified according to their location within the gastrointestinal tract (gastric,
ileocecal or colocolic),
Findings and procedure details
Intussusception may occur in any gastrointestinal segment and the imaging findings are similar regardless the location.
The most commonly used imaging methods are ultrasound and CT. Ultrasound In children,
ultrasound is the modality of choice,
as it has both high sensitivity and specificity,
and it is fast,
non-invasive and easy to perform.
in the adult population there may be false positives due to bowel thickening secondary to conditions such as lymphoma or an inflammatory mass....
Although intussusception is rare in adults,
it is often associated with an organic lesion,
most commonly a neoplasia.
The clinical presentation is quiet nonspecific,
often leading to delayed diagnosis.
Therefore one must be aware of this entity and its findings,
so that an early diagnosis can be made.
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