Background and study aims Although outcomes of lumen-apposing
metal stents (LAMS) placement in native anatomy have been reported, data on LAMS placement in
surgically altered anatomy (SAA) are sparse. We aimed to assess outcomes of LAMS placement in
patients with SAA for different indications.
Patients and methods This was an international, multicenter,
retrospective, observational study at 25 tertiary care centers through November 2023.
Consecutive patients with SAA who underwent LAMS placement were included. The primary outcome
was technical success defined as correct placement of LAMS. Secondary outcomes were clinical
success and safety.
Results Two hundred and seventy patients (125 males; average age
61 ± 15 years) underwent LAMS placement with SAA. Procedures included EUS-directed
transgastric ERCP (EDGE) and EUS-directed transenteric ERCP (EDEE) (n = 82), EUS-guided
entero-enterostomy (n = 81), EUS-guided biliary drainage (n = 57), EUS-guided drainage of
peri-pancreatic fluid collections (n = 48), and EUS-guided pancreaticogastrostomy (n = 2).
Most cases utilized AXIOS stents (n = 255) compared with SPAXUS stents (n = 15). Overall,
technical success was 98%, clinical success was 97%, and the adverse event (AE) rate was 12%.
Using AGREE classification, five events were rated as Grade II, 21 events as Grade IIIa, and
six events as IIIb. No difference in AEs were noted among stent types (P = 0.52).
Conclusions This study shows that placement of LAMS is associated
with high technical and clinical success rates in patients with SAA. However, the rate of AEs
is noteworthy, and thus, these procedures should be performed by expert endoscopists at
tertiary centers.