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Interventional Radiology in the Removal of Salivary Calculi¹

¹ From the Departments of Dental Radiology (N.A.D., J.E.B.) and Oral and Maxillofacial Surgery (M.P.E., M.M.), U.M.D.S., Guy's Dental Hospital, Floor 23, Guy's Tower, London SE1 9RT, United Kingdom. Received September 28, 1998; revision requested, December 17; revision received, April 1, 1999; accepted April 22. Address reprint requests to M.M. (e-mail: mark.mcgurk@kcl.ac.uk).

PURPOSE: To prospectively investigate the efficacy of a wire basket extractor in the retrieval of salivary calculi and establish selection criteria for suitable cases.

MATERIALS AND METHODS: Twenty-five consecutive patients (14 male, 11 female; age range, 13–69 years) with salivary calculi (20 submandibular, five parotid) were treated by using a commercially available wire basket extractor with intermittent fluoroscopic guidance.

RESULTS: Elimination of calculi was accomplished in 10 (40%) cases. In an additional seven (28%) cases, either part of the calculus was removed or whole calculi were removed with others remaining. Failure to retrieve any stone occurred in eight (32%) cases. The most common cause of failure was attachment of the calculus to the duct wall.

CONCLUSION: Interventional radiology provides a useful adjuvant method of calculus removal and complements extracorporeal lithotripsy. Basket retrieval of calculi has low morbidity and is rapid and less invasive than traditional surgery. It is most effective in retrieving mobile stones in the extraglandular parotid and submandibular ducts.

Index terms: Salivary glands, diseases, 264.818 • Salivary glands, interventional procedures, 264.1267 • Salivary glands, US, 264.1298

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