Surgery Pancreas baeef883 Rigler's sign is suggestive of - A Pneumothorax B Pneumoperitoneum C Peritonitis D Hemothorax High-Yield Explanation Ans. is 'b' i.e., Pneumoperitoneum Rigler's Signo Both sides of bowel become visible because of free gas on an abdominal xray. This is known as Rigler's Sign.