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General Surgery · Hernia: Richter hernia
Sample itemAn elderly woman has a tender, irreducible, red swelling below and lateral to the pubic tubercle. She is passing flatus and stool and has no vomiting or distension. At surgery, only the antimesenteric wall of the ileum is found gangrenous in the sac. What is this hernia?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Richter hernia
In a Richter hernia only part of the circumference of the bowel wall is trapped in the defect, most often in femoral hernias. Because the lumen stays partly patent, obstruction is absent and the diagnosis may be missed, yet the trapped wall can strangulate and perforate. Femoral hernias are the commonest site and are more frequent in women.
Option by option
A. Maydl hernia
A Maydl hernia contains two loops in the sac with the intervening loop lying in the abdomen (W-shaped).
B. Littre hernia
A Littre hernia contains a Meckel diverticulum.
C. Sliding hernia
A sliding hernia has a viscus forming part of the sac wall, such as caecum or sigmoid colon.
D. Richter hernia (correct)
Only part of the bowel wall is nipped, which explains strangulation without obstruction.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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