The most common reason for the appearance of the tumor on the cheek is the damage to the tooth, gums or mucous membrane. For example, in the absence of proper and regular care of the mouth may be inflammation of the gums. This is accompanied not only by formation of a tumor, but the bleeding gums, the appearance on the surface of ulcers, the formation of plaque on the teeth. The problem is solved by visit to the dental office where the doctor removes plaque, and takes measures to stop the inflammatory process.Cyst on the gums also leads to the formation of tumors. This is due to the penetration of the gum infection (for example, when damaged with a sharp object). A cyst is a large abscess, which requires a mandatory removal. Otherwise, the penetration of pus in the blood contributes to the diversity of the infection throughout the body. The dentist cleans your mouth, and in severe cases, remove the affected tooth.Also the tumor might be the cause of surgical intervention (e.g. tooth extraction). In this case, does not require any special treatment, applying ice for more rapid removal of edema and reduce pain.The source of the tumor is considered to be a hematoma in the cheek. Usually hematoma is accompanied not only by swelling of the skin and staining it in a bluish or reddish hue with distinct edges of the affected area.Shin splints also entails the swelling of the cheeks. The infection gets into the deep tissues of the tooth root, where gradually the accumulation of pus. Periostitis is the next phase of carious destruction of the teeth. It may swell not only the cheekbut also the neck.The swelling of the cheeks may occur with inflammation of the lymph node (lymphadenitis). To eliminate the possibility of sepsis and deterioration, it is recommended that ultrasound examination of the affected area.