Ultrasound-Guided Mechanical Fragmentation of Sialoliths
Objective Assess the efficacy of ultrasound-guided mechanical intraductal stone fragmentation and removal of sialoliths (SonoFragmentation). SonoFragmentation has been described recently as a new technique for the treatment of sialolithiasis (Surg Endosc 2006;20(4):690–4). Methods Retrospective analysis of cases treated within the last 3 years. Results SonoFragmentation was used as a 2nd line treatment in 22/28 cases. 10 patients were free of stones (parotid gland [PG]: 2x, submandibular gland [SMG]: 7x, sublingual gland: 1x; in 2 cases sialendoscopy was additionally used). Residual stones persisted in 12 patients (PG: 2x, SMG: 10x). 6 patients with sialolithiasis of the GP were primarily treated with the technique. 4 of those patients were cured. Reasons for failure were lacking accessibility of the stone by the forceps (9x), impossibility to grasp the stone (5x) and/or the concomitant grabbing of soft tissue together with the stone (3x). Conclusions The efficacy of SonoFragmentation as a secondary treatment after failure of other minimally invasive methods is about 50% (10/22). Additionally, it is a promising primary therapeutic option (cure: 4/6 patients).