A meatball on the right side of the tonsil may be caused by tonsil cysts, tonsil polyps, tonsil papilloma and other diseases. 1. Tonsil cysts: under the repeated stimulation of pharyngeal infection and inflammation, it may cause blockage of glandular secretion and formation of grayish-white cysts on the surface of tonsils, sometimes accompanied by foreign body sensation, or asymptomatic. 2. Tonsil polyp: a meatball on the right side of the tonsil may be a polyp on the surface of the tonsil, most of them are caused by chronic local inflammation and stimulation of hyperplasia, and the early symptoms are not obvious, and later there may be a foreign body sensation, cough and other symptoms. 3. Tonsil papilloma: abnormal proliferation of epithelial tissue caused by HPV virus infection, most of them have no self-awareness of symptoms, a few may have dry throat, foreign body sensation and other uncomfortable symptoms. When there is a meatball on the right side of the tonsil, you should go to the hospital immediately, complete the relevant examinations, and follow the doctor’s instructions after clarifying the cause of the disease.