Obstruction of the large intestine

-constipation-obstipation
-abdominal distention and sometimes tenderness
-abdominal pain
-nausea and vomiting
-characteristic x-ray finding
The wall of the right colon is thinner than that of the left colon and its luminal caliber is larger, so the cecum is at greatest risk of perforation in these circumstances. If the cecum acutely reaches a diameter of 10-12 cm, the risk of perforation is great.
deep, visceral, cramping pain from obstruction of the colon is usually referred to the hypogastrium. Borborygmus may be loud and coincident with cramps.
Feculent vomiting is a late manifestation.
Abdominal distention and tympany, and peristaltic waves may be seen if the abdominal wall is thin. High-pitched, metallic tinkles associated with rushes and gurgles may be heard on auscultation. Localized tenderness or a tender , palpable mass may indicate a strangulated closed loop. Fresh blood may be found in the rectum in Intussusception and in carcinoma of the rectum or colon. Colonoscopy may be diagnostic and perhaps therapeutic in some patients with strictures or Neoplasms.
Imaging
The distended colon frequently creates a picture frame. Water-soluble contrast medium should be used if strangulation or perforation is suspected.
Treatment
The primary goals of treatment are resection of all necrotic bowel and decompression of the obstructed segment to prevent prevent perforation .