<prompt> Etiology for this condition:Adhesive obstructionSigmoid volvulusMeckels diverticulumGastric volvulus  <response>: Ans. b Sigmoid volvulusRef: Bailey and Love 26th edition, Page 1195 Most common site of volvulus in colon -- sigmoid Most common direction of volvulus is anticlockwise Clockwise X-ray shows --Coffee-bean or bent inner tube sign Barium enema shows -- Bird beak sign 