Abstract:
Objective:To summarize the sonographic findings of children with secondary intussusception and provide a basis for clinical treatment.
Methods:The sonographic features generated by the causes in 43 cases of secondary intussusceptions in children in Hunan Children′s Hospital from January 2011 to January 2014 were retrospectively analysed and summarized,which were diagnosed by preoperative ultrasound and confirmed by surgery and pathology.
Results:Intestinal lymphoma was found in 6 cases,and there were 10 cases of colon polyps and 8 cases of enterogenous cyst;the Meckler′s diverticulum was found in 7 cases,and there were 3 cases of Crohn′s disease,2 cases of appendicitis and 3 cases of allergic purpura;small hemorrhage necrotizing enteritis was found in 2 cases,blood vessel lipoma in 1 case,congenital intestinal stenosis in 1 case.
Conclusion:For children with secondary intussusception,ultrasound can be used to confirm part of the primary disease,which could be the best option for detecting the cause of intussusception.In infants with secondary intussusception,often the primary disease is enterogenous cyst;in preschool children and school-age children,intestinal polyps and Merkel diverticulum are common;school-age children and children with recurrent intussusception need to be checked for the intestinal lymphoma and Crohn′s disease while congenital intestinal stenosis should be ruled out in intestinal stenosis.

Key words: Secondary intussusception, Ultrasonographic features, Children