Metastasis of Colon Adenocarcinoma to Maxillary Gingiva and Palate

Introduction: Colon adenocarcinoma is one of the foremost causes of cancer mortality. Oral metastasis of colon adenocarcinoma is, however, rare and indicates an end-stage disease process.   Case Report: We report a case of a 69-year-old female with a gingival mass diagnosed with colon adenocarcinoma and liver metastasis after one year. A swelling was found in the maxillary right buccal and lingual gingiva during physical examination. Tissue biopsy revealed an intestinal metastatic adenocarcinoma. The patient underwent chemotherapy for treatment. We also reviewed all reported cases of gingival metastasis due to colon adenocarcinoma.   Conclusion: Careful examination of the oral cavity in patients with the adenocarcinomas of various organs is beneficial in the early diagnosis of metastasis since the most frequent metastatic lesion of the oral cavity is adenocarcinoma.