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What is Thumb print sign is seen in: March 2011 and explain in detail?
Ans. C: Ischemic colitis Earlier features of intestinal ischemia seen on abdominal radiographs include bowel wall edema, known as "thumb printing". Radiological signs in GIT: Thumb printing sign: Ischemic colitis Bird of prey sign: Sigmoid volvulus Double bubble sign (X-ray abdomen): - Annular pancreas - Duodenal atresia String sign: - Crohn's disease - Pyloric stenosis Single bubble sign: Pyloric stenosis Chain of lake appearance: Chronic pancreatitis Fox sign: Acute pancreatitis Widening of duodenal C loop: Carcinoma of head pf pancreas