Intussusception of vermiform appendix. A case report and review of the literature.

Intussusception of the appendix into the caecum is an uncommon condition and the diagnosis is rarely made preoperatively. Specific anatomic requirements as well as pathological conditions causing irritation or increasing peristalsis should be present for this event to occur. A case is discussed in which the diagnosis was made of an ileocolic invagination, which appeared peroperatively to be an appendicular invagination.