Wang and Welch [4] showed that 24 of 50 patients were clinically asymptomatic in their case series of adolescents and adults with malrotation. Adults with a rotational abnormality of the gut usually present differently to paediatric patients. Two distinct patterns of adult presentations have GS-4997 research buy been reported in the literature: acute and chronic [5, 7, 9]. Chronic presentation is more common in adults. This is characterised by intermittent crampy abdominal pain, bloating, nausea and vomiting

over several months or years. The symptoms may be highly nonspecific. However, the range of clinical presentations, underlines the need for a high index of suspicion of midgut malrotation, when investigating the cause of intermittent and varying abdominal symptomatology in a healthy young adult [5, 7]. Dietz et al [5] studied a series of 10 adults with bowel obstruction caused by intestinal malrotation. They reported that 5 adults presented with chronic features and that the duration of symptoms

extended to 30 years. Fu et al [7] reported that 6 of 12 patients in their series presented with chronic intermittent abdominal symptoms. Diagnostic delays are common in this group of patients because of the nonspecific nature of the presentations. The pathophysiology of these chronic symptoms may relate to the compression effect of Ladd’s bands this website running from the caecum and ascending colon to the right abdominal wall [5, 10]. The other group of symptomatic HAS1 adults typically present with symptoms of acute bowel obstruction and these patients may or may not report a previous history of abdominal symptoms, CHIR-99021 cost as with our patient. These patients may on occasion, have symptoms and signs of an impending abdominal catastrophe. Moldrem et al

[9] reported that 48.5% of their thirty-three patients presented with an acute abdomen. Acute presentation may be due to volvulus of the midgut or ileocaecum, reported as the most common cause of bowel obstruction in adults with gut malrotation. Other causes of acute presentation may be related to internal herniation caused by Ladd’s bands. There is also a subgroup of acutely presenting adult patients with malrotation. They are identified when affected by other common abdominal diseases. Their unusual intestinal anatomy results in atypical signs and symptoms. These patients may present with localised peritonitis in the right upper quadrant or on the left side of the abdomen if their appendix becomes inflamed. The atypical presentations may lead to confusion, as one common abdominal pathology may mimics another, leading to incorrect diagnosis of conditions such as acute appendicitis, cholecystitis, pancreatitis, perforated peptic ulcer disease and left colonic diverticulitis. Several authors have reported observing atypical presentations of this nature before discovering gut malrotation with abnormal location of the caecum and appendix at surgery [5, 7].