Most common causeof acute intestinal obstruction is :

Intra-abdominal adhesions related to prior abdominal surgery account for upto 75% of the cases of small bowel obstruction. Intestinal Obstruction Causes Intraluminal (Eg. Foreign bodies, gallstones, or meconium) Intramural (Eg. Tumors, Crohn’s disease – associated inflammatory strictures) Extrinsic (Eg. Adhesions, hernias, or carcinomatosis) Clinical Presentation : Colicky abdominal pain, nausea, vomiting, abdominal distension and constipation are seen. Constipation is not seen in : Richter’s hernia obstruction, gall stone obstruction, mesenteric vascular occlusion. Vomiting is a more prominent symptom with proximal obstructions than distal.