Abstract
INTRODUCTION: Midgut volvulus in adults based on congenital malrotation, which required emergency surgery, may occur under the stimulation of adverse factors and is rare and easy to be misdiagnosed. PRESENTATION OF CASE: A young male was taken to the emergency room of a local hospital after six hours abdominal pain. Computed tomography (CT) shows intestinal volvulus and exploratory laparotomy was performed. Postoperative CT revealed remission of small intestinal torsion and congenital malrotation of the midgut. The patient vomited frequently within 48 h after the surgery, and was transferred to our hospital for conservative treatment. After 4 days of conservative treatment, the vomiting symptoms were relieved at first, but worsened again after a liquid diet. CT showed complete duodenal obstruction and exploratory laparotomy was performed again. Congenital malrotation was found, which resulted in midgut volvulus and duodenal obstruction due to anomalous fixation of the mesentery. The bowel was placed in normal anatomical position, and the mesentery was sutured to the posterior abdominal wall. The patient was followed up for 24 months with no complaints. DISCUSSION: Due to the rare incidence and atypical pain clinical manifestations, it is difficult for the congenital malrotation in adults to be diagnosed. Midgut volvulus in adults with malrotation is even rarer and requires emergency operation, and may be misdiagnosed. CONCLUSION: Midgut volvulus with midgut malrotation is very rare in adults. Exploratory laparotomy must be careful to reduce misdiagnosis and recurrence of volvulus.