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Use of Lumen-Apposing Metal Stents for Endoscopic Drainage of Intra-abdominal Fluid Collections in Pediatric Patients.

INTRODUCTION
Intra-abdominal fluid collections that previously required surgical intervention can now be drained with less invasive techniques. The use of lumen-apposing metal stents (LAMS) to treat pancreatic pseudocysts and perirectal abscesses has been shown to be a safe and effective technique in adults. We aim to evaluate the indications, outcomes, and complications of the use of LAMS in pediatric patients at our institution.


METHODS
A retrospective chart review was performed to study patients up to 18 years of age at the Children's Hospital at Montefiore who underwent drainage of intra-abdominal fluid collections with the use of LAMS. The main outcome measures were technical and clinical success and associated adverse events with LAMS placement.


RESULTS
Seven patients (two female) ranging from 9-18 years were identified. Four patients had perirectal abscess post perforated appendicitis and three patients had pancreatic pseudocysts. All of the patients had complete resolution of the collections, with no recurrence, and our technical and clinical success rate was 100%. Only one patient had mild bleeding after placement that spontaneously resolved.


DISCUSSION
Our study demonstrates the efficacy and safety of the use of LAMS for the drainage of intra-abdominal fluid collections in pediatric patients, although the number of patients included is limited.