Isolated gingival metastasis from lung carcinoma.

Metastases to the gingiva are uncommon. They can be a diagnostic challenge clinically because of their rarity and tendency to mimic benign lesions. We present the case of an undifferentiated small cell lung carcinoma in a 76-year-old man whose left lower gum showed a lesion similar to pyogenic granuloma. Biopsy confirmed gingival metastasis of lung cancer. We make a differential diagnosis of proliferative lesions and metastatic tumors.