Small bowel obstruction due to an incarcerated femoral hernia
Study requested for suspected bowel obstruction.
CT abdomen and pelvis
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Computed tomography shows dilated small bowel loops, associated with a right femoral hernia.
Intestinal obstruction due to an abdominal hernia is the second commonest cause of small bowel obstruction after adhesions and most are secondary to incarceration and strangulation. It is a rare cause of colonic obstruction.
Key findings on CT are dilated proximal loops distal to the hernia with a ''knuckle'' of bowel caught in the hernia neck.