90% of cases of intestinal obstruction caused by intestinal malrotation occur in children under 1 year of age, being very uncommon in adults. A female patient of 27 years of age consults with abdominal pain, vomiting, abdominal distention, dehydration and signs of severe malnutrition. After EGDS, CT scan, and 48 hours of clinical expectation, surgical intervention was decided with diagnosis of high intestinal obstruction. Intraoperative finding was no intestinal rotation at all. Ladd´s technique was performed together with prophylactic appendectomy. Postoperative evolution was favorable. The rare presentation in adults motivates the presentation of this case.