Intestinal Intussusception in Adults: A Diagnostic Challenge

Abstract

Intussusception, a rare cause of intestinal obstruction in adults, accounts for only 1% of obstruction cases and 5% of all intussusceptions. Its global incidence is 1-3 cases per million per year. Early identification is challenging, which can lead to significant morbidity and mortality. In adults, intussusception is often associated with benign or malignant lesions, with primary adenocarcinoma being the principal cause. Preoperative diagnosis can be complex, and computed tomography (CT) is considered the preferred imaging modality. Most cases require surgical intervention, and the decision on whether to reduce before resection depends on the type and location of the lesion. Both laparoscopic and open surgeries are valid options, depending on clinical conditions and the surgical team's experience. We present the case of a patient in their fourth decade of life with a 15-day history, who presented to the emergency room with symptoms of intestinal obstruction secondary to intussusception. An emergency laparotomy was performed, revealing intussusception from the ascending colon to the transverse colon with a neoplastic-looking lesion in the cecum. A right radical hemicolectomy with intestinal diversion was performed. Histopathological examination revealed a moderately differentiated grade 2 adenocarcinoma.