Malrotation of the midgut associated with horseshoe kidney presenting as gastric outlet obstruction in a 15-year-old boy.

Malrotation occurs in approximately 1 in 500 live births. However, the true incidence of malrotation is unknown since many asymptomatic patients fail to present. Approximately 90% of patients with malrotation are diagnosed within the 1 year of life. Eighty per cent of them are diagnosed within the 1 month of life. Nevertheless, there are recent reports of manifestations later in life both as emergency conditions and more chronic gastrointestinal symptoms. The relationship between malrotation and horseshoe kidney has not been fully understood, but few case reports have highlighted their occurrence in the same patient. The mode of presentation of this case and its association with a horseshoe kidney is the reason for this report. This was a case of malrotation associated with horseshoe kidney. He had exploratory laparotomy and Ladd's procedure. Malrotation is associated with horseshoe kidney which presented as gastric outlet obstruction. He responded well to treatment after Ladd's procedure.