Abstract
Xanthogranulomatous tissue reaction is an inflammatory change that forms granulomas mainly composed of histiocytes, and xanthogranulomatous sialadenitis is extremely rare. Here we report a case of xanthogranulomatous sialadenitis of the sublingual gland. The patient was a 68-year-old Japanese woman. An elastic slightly hard mass with a diameter of 1cm was palpated under the oral mucosa on the right side of the oral floor. We suspected a diagnosis of sublingual gland tumor and performed excisional biopsy. The histopathological diagnosis was xanthogranulomatous sialadenitis. Currently, 2.5 years have elapsed since the surgery, without recurrence.