Symptomatic appendiceal intussusception-rare pitfall of the historical inversion technique.

Appendiceal intussusception is a rare condition with an unknown incidence of clinical presentation, and an estimated incidence of 0.01% is based on a histological study only. It presents a diagnostic challenge with lack of standardized management strategies, and its description in literature is limited to case reports and series. Clinical presentation is often variable and nonspecific; it is uncommon to have a definitive preoperative diagnosis. Iatrogenic appendiceal intussusception can occur as a result of the historical simple inversion or inversion-ligation appendicectomy technique, but it is seldom reported to cause symptoms. We present a case of symptomatic appendiceal intussusception diagnosed preoperatively on both computed tomography and colonoscopy prior to proceeding with elective definitive surgery in a patient with no reported prior history of appendicectomy.