Pleomorphic adenoma of the sublingual salivary gland: an unusual diagnostic challenge.

OBJECTIVES To describe a rare case of pleomorphic adenoma of the sublingual gland. CLINICAL PRESENTATION AND INTERVENTION An 80-year-old patient presented with a painless solid submucosal mass of 4 months' duration in the anterior floor of the mouth, appearing as a distinct homogeneous, radiolucent lesion in CT imaging. Histologic findings after complete removal were suggestive of a pleomorphic adenoma almost completely surrounded by a fibrous capsule. No recurrence was observed after a 12-month follow-up. CONCLUSION This case showed the possibility of sublingual salivary gland tumors and highlighted the need to consider them when making a differential diagnosis of masses located in the floor of the mouth.