Among the malignant pathologies of the oral cavity we can find oral metastasis, fortunately quite rare. Only 33% of oral metastatic lesions were seated in the soft tissues, while the bone tissues are the most affected. We had found in Pubmed literature only 7 cases of oral metastasis on the floor of the mouth with the keywords “oral metastasis in the floor of the mouth”, “floor of the mouth metastasis”; we found only 5 cases of oral metastasis on the cheek with keywords “ oral metastasis on the cheek”. The primary tumors, average age of patients, diameter of the metastatic lesions on the floor and on the cheek are analyzed in this short review and compared with previous review of the literature when it was possible. Oral lesion of 54 mm of maximum diameter was reported. This fact underlines how this oral disease can sometimes be misunderstood, and the importance of regular checks in patients who already have a diagnosis of malignancy.