Much less common than SBO, but more ominous (frequently associated with malignancy)<unk>  more common in elderly, and generally has more insidious onset than SBO
Most commonly occurs in the left (descending) colon
Obstruction originating from the left colon is likely to manifest with symptoms earlier than obstruction originating from the right colon, because the lumen from the descending colon and the sigmoid is smaller.<unk>  more common in elderly, and generally has more insidious onset than SBO
Obstruction originating from the left colon is likely to manifest with symptoms earlier than obstruction originating from the right colon, because the lumen from the descending colon and the sigmoid is smaller.
Neoplasm (most common cause)
Adhesions
Diverticular disease
Fecal impaction
Hernias
Strictures
Pseudo-obstruction (e.g. Ogilvie's Syndrome)
Volvulus
Large bowel obstruction
Abdominal aortic aneurysm
Small bowel obstruction
Aortocaval fistula
Malignant bowel obstruction
Acute gastroenteritis
Epiploic appendagitis
Aortoenteric fisulta