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Table 2 Diagnostic signs of intestinal volvulus

From: Intestinal volvulus in the pump twin of a twin reversed arterial perfusion (TRAP) sequence after laser therapy at 18 weeks: a case report

Bowel loop dilation
Fluid meconial level
Whirlpool sign or snail sign: dilated bowel loops forming a typical convoluted mass in a clockwise direction
Meconium peritonitis: calcification, ascites, pseudocyst
Coffee bean sign: distension of a very short segment of bowel