Nonoperative Management for Peri-Appendiceal Abscesses after Percutaneous Drainage Without Interval Appendectomy
Abstract Background: Initial non-operative management (NOM) with percutaneous drainage for peri-appendiceal abscesses has been proven to be safe and effective. However, the appropriateness of interval appendectomy after NOM is still a matter of debate. The aim of this study was to investigate the feasibility of NOM without performing interval appendectomy.Methods: A retrospective review of medical records was performed for patients who were admitted with peri-appendiceal abscesses between January 2009 and December 2019. After percutaneous drainage for the abscesses, whether to undergo interval appendectomy was decided by the patients. Their clinical courses were reviewed thoroughly through their medical records. Telephone contact with these patients was made when necessary. Results: Twenty-seven patients were enrolled, with a mean age of 63.1 years (± 11.9 years). The median follow-up period was 25.7 months. The most common co-morbidities were cardiovascular disorders (eight patients) and underlying malignancies (eight patients). The mean size of the abscesses was 5.4 x 4.1 ㎝. Three patients consequently received surgery for the recurrence of appendicitis or peri-appendiceal abscesses. One patient received a right hemicolectomy, and another two received open appendectomies. Four patients (14.8%) died within the follow-up period due to underlying diseases.Conclusion: Initial NOM without interval appendectomy was a safe option in selected patients with peri-appendiceal abscess.