Two cases of sialolithiasis of the minor salivary glands

This paper presents two cases of sialolithiasis in the minor salivary glands. One occurred in the lower lip of a 75-year-old man, and the other in the buccal mucosa of a 30-year-old woman. The clinical diagnosis of both cases was a salivary gland tumor. Histologically, small salivary calculi existed in the dilated duct in association with squamous cell metaplasia, and remarkable inflammatory cell infiltration was found in the surrounding tissue of the duct. The calculi seemed to consist of an organic compound containing much sulfur, and they appeared to be immature due to the presence of decalcifying material. The incidence of minor salivary sialolithiasis among all cases of sialolithiasis over the last five years in our clinic was 2.7%.