Extracorporeal electromagnetic shock-wave lithotripsy for salivary gland stones.

Sialoadenectomy for sialolithiasis is necessary when the stone cannot be removed through the salivary duct. In addition, extracorporeal. shock-wave lithotripsy has recently become available for this purpose. The safety and efficacy of this method was assessed in 52 outpatients bearing stones with an average diameter of 6.76 mm in the submandibular or parotid gland. Anesthetics, sedatives, and analgesics were not required. Twenty-four of the 36 patients with submandibular gland calculi and all 16 with parotid sialolithiasis had complete stone disintegration or fragmentation of the calculi, with possible spontaneous clearance. Untoward effects were observed in 15 patients, namely localized skin petecchiae, transitory swelling of the gland, and self-limiting bleeding from the duct. No persistent damage of the salivary glands or adjacent structures was noted during a mean follow-up period of 10 months.