XXXX . A review of the American experience.

@entity1 @entity697 @entity390 @entity391 @entity189 @entity7261 @entity911 @entity4436
The etiology of @entity4436 remains unclear. The majority of @entity7261 are solitary and probably false and may be the result of the same degenerative process seen in the more common left-sided @entity7261 . A minority are true @entity7261 and may be of congenital origin. @entity4436 is clinically indistinguishable from @entity697 although @entity1 with @entity4436 tend to be older (average age, 40 years), have a longer duration of symptoms, and present less often with @entity390 and @entity391 . In @entity1 with previous appendectomy and in those with more indolent symptoms, barium enema may be helpful in making the diagnosis. If nonoperative treatment is chosen, careful follow-up with air contrast barium enema and colonoscopy should be carried out. The majority of @entity1 require surgery and two types of @entity4436 are encountered at laparotomy. The usual type, accounting for two thirds of cases, is easy to recognize, has an inflamed projection from the cecal wall, and is dealt with by a limited local diverticulectomy. Some authors advocate nonsurgical treatment for this first group of @entity1 . Incidental appendectomy is advocated to avoid @entity911 should symptoms occur postoperatively. The hidden variant presents as a large, indurated phlegmon and is difficult to distinguish from a perforated @entity189 . With the hidden variant, right hemicolectomy is the surgical treatment of choice and carries a 1.4 percent mortality.
