Malrotation of the intestinal tract is a product of a well defined abe
rrant embryology. Because the consequences of malrotation associated w
ith a midgut volvulus may be catastrophic, an understanding of the ana
tomy, diagnostic criteria, and appropriate therapy for this putative e
mergency illness is imperative. This report summarizes a recent 18-mon
th experience with this diagnosis and contrasts this experience with t
hat in the published literature. More than half (14/22) of the patient
s presented during the first month of life, and all had vomiting, whic
h in most cases was bilious. The barium upper gastrointestinal series
was the preferred diagnostic study, being both sensitive (18/19, 95%)
and accurate (18/21, 86%). In this series two-thirds of the patients p
resented with volvulus (15/22, 68%) of whom five had ischemic intestin
e requiring resection. One of these children died of overwhelming seps
is. A Ladd procedure was the preferred treatment, which as defined by
us includes evisceration and inspection of the mesenteric root, counte
rclockwise derotation of a midgut volvulus, lysis of Ladd's bands with
straightening of the duodenum along the right abdominal gutter, inver
sion-ligation appendectomy, and placement of the cecum into the left l
ower quadrant. A high index of suspicion in the neonate with vomiting,
rapid diagnosis, and appropriate operative therapy results in a predi
ctable favorable outcome for children with intestinal malrotation.