Complete Appendiceal Intussusception induced by Primary Adenocarcinoma of the Vermiform Appendix: A Rare Case Report and Review of the Relevant Literature

ABSTRACT Appendicular intussusception is a rare entity. Although first reported in 1858 there are only 250 cases reported since. In a large autopsy series the incidence rate of only 0.01% was documented. The exact pathophysiology is unclear but several etiologies have been documented. Primary adenocarcinoma of the appendix is extremely uncommon, which in most cases arises from a pre-existing adenoma. The incidence according to a reported study was documented as 0.08%. We report an uncommon case of a young female who presented with a 2-day history of abdominal pain with nausea and vomiting. Computed tomography scan suggested of ileocolic intussusception. Diagnostic laparoscopy was performed followed by open laparotomy. An appendicular tumor confirmed as adenocarcinoma of the appendix on frozen section was noted to be the cause of the intussusception. A right hemicolectomy was performed. We discuss the different anatomical and pathological factors causing appendicular intussusception with special emphasis on primary adenocarcinoma of the appendix, clinical features, classifications, preoperative diagnoses and treatment options of this rare disease entity along with review of relevant literature. How to cite this article Ebaid S, Biswas S, Patel P. Complete Appendiceal Intussusception induced by Primary Adenocarcinoma of the Vermiform Appendix: A Rare Case Report and Review of the Relevant Literature. Panam J Trauma Crit Care Emerg Surg 2015;4(1):36-38.