Trapped air sign in upper abdomen on plain xray is seen in
Shopfner described this sign in patients with peri Gastric adhesions.It consists of trapped air pockets in pas of the Gastric antrum, elevated and fixed by perigastric adhesions to adjacent organs like liver and pancreasValuable in excluding Gastric carcinomasMost commonly seen in benign conditions
Splenic tumour
Renal stones
Pancreatitis
Chronic duodenal ulcer
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