Introduction: The congenital mesenteric band is related to a mesenteric anomaly occurring during the establishment of the digestive structures in the abdominal cavity. We report a case of congenital band occlusion in a child.

Observation: An 8-year-old girl, with no known history, admitted for diffuse abdominal pain, in whom the clinical examination found an occlusive syndrome. Abdominal X-ray without preparation and abdominal ultrasound revealed haelic and colic type hydro-aeric levels and colic and hail distension. The diagnosis of intestinal obstruction was retained. The biological assessment carried out showed a hemoglobin level of 12g/dl. Platelets were at 170,000. Prothrombin count was at 80%. The ionogram was disturbed with hyponatremia at 119 mmol/l, hypokalaemia at 2 mmol/l. The CRP was at 60 mg/l.

At midline laparotomy, exploration finds a mesenteric flange compressing the ileal loop 80 cm from Bauhin's valve. We sectioned the mesenteric band with the presence of an ileal constrictive zone without necrosis and the release of several bands between small bowels.

Conclusion: Digestive occlusion on a congenital mesenteric band is a rare malformative occlusion whose diagnosis is sometimes not possible by means of imaging.