Intussusception is common in infants aged 5 to 18 months, but there ha
ve been only 12 reports of its occurrence among premature infants. Nin
e of these previously reported cases with adequate data and one new ca
se are reviewed. Many of the infants were believed to have necrotizing
enterocolitis, leading to an average 12-day interval between the onse
t of signs and the operation. Bilious emesis or nasogastric contents.
bloody stool, and intestinal dilation without pneumatosis intestinalis
were common. A contrast enema showed the intussusception in only 1 of
7 cases. Most cases were diagnosed in the operating room and underwen
t successful primary anastomosis. with no recurrences. A pathological
lead point was identified in 2 of the 10 cases. The overall mortality
rate was 23%; the one death since 1970 was secondary to attempted hydr
ostatic reduction. These cases may represent what, in the absence of p
remature delivery, would have been the intrauterine development of int
ussusception likely leading to small bowel atresia. (C) 1996 by W.B. S
aunders Company