Extramammary Paget disease of the buccal mucosa in an elderly patient

To report a rare case of oral extramammary Paget disease in an elderly patient.Extramammary Paget disease is a rare cutaneous malignancy, and oral mucosa involvement is extremely rare.The patient was a 72-year-old man with a whitish plaque and areas of erosion on the right buccal mucosa.An incisional biopsy was performed, and the diagnosis was extramammary Paget disease.Both clinicians and pathologists should be aware of this disease to avoid misdiagnoses with other oral benign or malignant lesions.