Acute intussusception (IBI) is a common pathology in children rarely seen in adults . It accounts for less than 5% of acute intestinal occlusions in adults. The intaginations concern the small intestine in 75% of the cases and the colon in 25% of the cases . The anatomical forms of intussusception are multiple. The ileo coecale form is the most common anatomical form. In contrast to the child, in the adult it is often secondary to an endoluminal lesion of malignant type, rarely a benign tumor  . In adults, given its rarity, the diagnosis can be difficult and the circumstances of discovery vary, and the clinical picture is not specific and evolves most often in a chronic mode. We report a rare case of acute intestinal obstruction due to ileo-coecolonic invagination secondary to ascending colon adenocarcinoma in a 40-year-old patient in the surgery “A” department of the Point G. HUC. Following data analysis of the literature concerning this pathology, we discussed the clinical, paraclinical and therapeutic characteristics.
This patient was 40 years old, weighing 65 kg and 1.65 m tall. She was admitted on 25/7/2019 to surgery department “A” at Point-G Hospital. Pains of the right iliac fossa. The patient’s recent clinical history has revealed in her antecedents a notion of chronic constipation, episodic abdominal pain, and rectorrhagia of increasing asthenia. On physical examination a mass was palpated in the right flank, the examination of the other organs was without particularity. The biological assessment was normal again. An abdominal ultrasound was requested and performed. It highlighted a suggestive aspect of acute intestinal intussusception localized to the right flank without obvious sign of complication. The patient was operated on 26/7/2019, an ileo-coeco-colic invagination on tumor of the right colon was found. We performed a right hemicolectomy (Figure 1) with transverse endo lateral iloostomy. The operative specimen was packaged and sent to the department of pathological anatomy, the result of the anatomic pathological examination concluded to adenocarcinoma.
Intestinal invaginations are relatively rare in adults. They represent 2% to 4% of intestinal occlusions in adults . The first intestinal intussusception was described by Barbette of Amsterdam in 1674  and Sir Jonathan Hutchinson who performed the first intestinal intussusception surgery in 1871. Acute intussusception is defined by telescoping and penetration of an intestinal segment (invaginated loop) in the downstream segment (receiving loop) . The anatomical forms of intussusception are multiple. She is most often hail (48% - 70%), ileocolic (25% - 40%) and rarely pure colic (5% - 18%)  . We report in this work a case of double ileal-coeco-colic invagination which represents a rare variety, some cases have been reported in the series of Sange G, and Costanzo A  . Intestinal intussusception sites are the junction points between a mobile intestinal segment and a fixed segment such as the ileocecal region that is most frequently involved . The clinical symptomatology in the adult is specific because of its rarity unlike in the child the clinical aspects are known in connection with the high frequency. It results in signs of bowel obstruction (abdominal pain, stool and gas transit stoppage)  and can take a chronic course (incomplete intussusception, which can regress itself.) In the series reported by Begos  75% of the patients presented with signs of intestinal obstruction, and 25% of the
Figure 1. Colectomy patch right photo surgery “A” POINT G.
patients had an abdominal mass. The patient in our study presented with clinical signs (abdominal pain, abdominal mass, rectal bleeding, vomiting), which led us to a colonic tumor pathology. The ultrasound performed evoked an acute intussusception. The patient was operated. We found an ileoceco-colic invagination on tumor of the right colon, a right hemi colectomy with ileal anastomosis. The anatomopathological examination of the operative specimen concluded that there was adenocarcinoma of the colon and the prognosis for intussusception was related to duration of evolution, the extent of the lesions and the nature of the cause.
Iceo-coeco-colic invagination on colon adenocarcinoma is a rare condition in adults. Ultrasound and especially scanner have an essential place in the diagnosis of intussusception and its cause. Faced with an ileocolic invagination on colonic process, a carcinological resection is required, because the majority of colonic tumors are malignant.
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