Sialolithiasis of minor salivary gland in the upper lip

This report presents two cases of minor salivary gland sialolithiasis, which were found in 81 and 66-year-old males.In Japan, these are considered to be rare cases, in which only 27 (including ours) were reported. The sex distribution was 20: 7 for males with mean age of 56. 2 years (range 22-81). The upper lip was the most frequent site of involvement, followed by buccal mucosa. The histological figure of the 3 calculi of our cases were found to be homogeneous, partially lamellated, and lamellated patterns in the structure.Reviewing the English literatures revealed a huge number of reports, in which at least 50 cases had been reported in one hospital alone as an example.The clinical findings and the structure in the reported cases seemed similar in both Japan and the other countries.In the English literature minor salivary gland sialolithiasis is reported frequently, so it is not considered as a rare case any more. This might become the case of Japan, in which such cases would be seen frequently in the future.