Clinical characteristics of recurrent intussusception: A single-center retrospective study

Purpose: we attempted to summarize the clinical characteristics of recurrent intussusception through a large sample size retrospective study. Methods: 5778 patients who were diagnosed with intussusception and treated in our hospital between January 2014 and December 2018 were reviewed. Results: the overall recurrence rate was 20.0%, with the recurrence frequency ranged from 1 to 17 episodes and the recurrence interval ranged from 0 to 5 years. 80.0% (926/1158) patients had only 1 to 2 episodes of recurrence. Most of the patients (88.3%) relapsed within 1 year after successful reduction, among which 616 patients (53.2%) relapsed within 3 days. The recurrence rate of intussusception was the lowest when the age was less than 1 year, increased and kept high level in patients aged from 1 to 5 years old, then decreased after 5 years. The pathologic lead point (PLP) proportion of recurrence group was higher than that of non-recurrence group (2.2% VS 1.2%, P = 0.005). Conclusions: the overall recurrence rate was 20.0%. Most of the patients had only 1 to 2 episodes of recurrence and relapsed within 1 year after successful reduction. Age and PLP were risk factors for intussusception recurrence. (c) 2021 Elsevier Inc. All rights reserved.