Lymphatic Embolization for the Management of Post-operative Chyle Leaks Following Solid Tumor Resection in Pediatric Patients.

BACKGROUND:Chyle leaks are a common post-operative complication following solid-tumor resection in pediatric patients. Current treatments for persistent chyle leaks are limited, leading many patients to experience prolonged hospitalization, nutritional deficits and/or delays in cancer therapies. Lymphatic embolization is an emerging treatment option for chyle leaks, however, limited reports exist of its use in pediatric populations. METHODS:We conducted a retrospective review of pediatric patients (<18) who underwent lymphangiogram with intent for lymphatic embolization for the management of chyle leaks following solid-tumor resection between 2017 and 2022. RESULTS:Seven patients underwent a total of 11 attempted lymphatic embolization procedures after current standard of care treatments failed to resolve the leak. Lymphangiograms identified a chyle leak in 6 of 7 patients and embolization had a technical success rate of 73%. The complication rate was 9% and complications were limited to one episode of inadvertent gastric wall perforation that did not result in a gastric leak. Lymphatic embolization was ultimately associated with chyle leak resolution in 100% of patients within a median of 24 days, however, repeat embolization was required in 5 of 7 patients (83%). CONCLUSION:Lymphatic embolization appears to be a safe and effective treatment for persistent chyle leaks in pediatric patients, leads to a direction reduction in chyle output, and has high rates of technical and clinical success. Complete resolution of the chyle leak may require multiple embolization procedures. Further work is needed to determine whether earlier intervention may offer benefit for the management of pediatric chyle leaks. LEVEL OF EVIDENCE:IV.