Background: The incidence of hollow viscus injury (HVI) after blunt tr
auma (BT) is variable, and differences between children and adults hav
e not been well described, The purpose of this study is to determine t
he age-group-related incidence and characteristics of BT-associated HV
I as well as the clinical markers and consequences of delayed diagnosi
s. Methods: A 9-year trauma registry review of all patients with HVI.
Results: A large sample of patients (19,621) with BT were evaluated (2
,550 less than or equal to 14 years old; 17,070 > 14 years old). One h
undred thirty-nine of 17,070 (0.8%) adults had HVI compared with 27 of
2,550 (1%) children, HVI occurred more frequently in the duodenum in
children (11 of 27) compared with adults (17 of 139) (p < 0.05), Among
patients with abdominal wall ecchymosis, 13.5% of children had HVI co
mpared with 10.6% of adults. Delays in diagnosis of HVI occurred in 9
of 27 children compared with 10 of 139 adults (p < 0.05), Delayed diag
nosis was associated with increased abdominal septic complications in
both children (4 of 9) and adults (2 of 10) compared with diagnosis at
presentation (p < 0.05). Conclusion: HVI occurs with a similar low fr
equency in both children and adults. Duodenal injuries are more common
in pediatric BT patients. Abdominal wall ecchymosis is associated wit
h increased HVI but is less predictive of HVI than previously describe
d. Contrary to previous reports, delays in diagnosis are associated wi
th increased morbidity.