Intussusception of the appendix. A report of four cases and review of the literature.
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The clinical and pathologic features of four cases of intussusception of the appendix are reported and the literature is reviewed. All patients had vague abdominal symptoms. The diagnosis of intussusception of the appendix was not made preoperatively in any of these cases. All four patients were females who ranged from 37 to 70 years of age (mean age, 46 years). Examination of the surgical specimens showed tow appendixes that had completely inverted, one with a polyp attached at the base of the appendix forming the intussusceptum and the other with inversion of the appendiceal tip. Three cases were associated with endometriosis and one with a tubulovillous adenoma. Radiologically and endoscopically, the intussuscepted appendix may mimic a neoplastic lesion. Since intussusception may be caused by both benign and malignant conditions, appropriate management will depend on the associated cause.
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