Abstract: Sialadenoma papilliferum is a rare benign tumor, primarily of minor salivary gland origin. The malignant transformation of sialadenoma papilliferum is rarely reported. This is a case of malignant transformation of sialadenoma papilliferum that is arised in the gingiva. The diagnosis is confirmed through the clinical, imaging, and histopathological examinations. Eight months after excision and nodal dissection, there is no evidence of recurrence or metastasis.

Key words: Sialadenoma papilliferum , Malignant , Excision