Long-term outcomes of elective transcatheter dense coil embolization for splenic artery aneurysms: a two-center experience

Objective This study was performed to analyze the long-term follow-up safety and efficacy of transcatheter dense coil embolization for splenic artery aneurysms. Methods Thirty-two patients (18 women, 14 men; age range, 23–56 years; mean age, 43.1 ± 13.6 years) who underwent dense coil embolization for treatment of splenic artery aneurysms from August 2010 to January 2018 were retrospectively reviewed. The size and location of the splenic artery aneurysms, the technical and clinical outcomes of the procedure, and the complications related to the procedure were reviewed. Results The technical success rate of embolization was 100% (mean aneurysm size, 29.4 ± 6.9 mm; range, 20–43 mm). Two (6.3%) patients underwent a successful repeat intervention procedure for recurrent aneurysm perfusion during follow-up (mean, 36 months; range, 6–72 months). No aneurysm ruptured during follow-up. Splenic infarction was observed in 8 of 32 (25%) patients. No patients developed major adverse events related to the procedure, such as splenic abscess or pancreatitis. Conclusions Percutaneous elective transcatheter dense coil embolization is safe and effective to prevent aneurysm rupture and overcome aneurysm recanalization during long-term follow-up.