This paper describes an unusual case of ileal atresia associated with
an omphalomesenteric duct (OMD) remnant, A 1-day-old male developed bi
lious vomiting and abdominal distension. At laparotomy, the distal por
tion of the ileum was connected to the umbilicus with a fibrous band.
Around this omphalomesenteric band, the ileum was strangulated and nec
rotic; the end of the ileum was atretic. Apart from these structures,
the cecum terminated without mesentery. This experience shows evidence
of an OMD remnant as a possible cause of jejunoileal atresia.