Symptoms of having malignant tumor on the buttocks are usually localized lumps, compression symptoms, malignant disease and other symptoms. 1. Lump: malignant tumors on the buttocks will be manifested as a lump in the affected area, which is hard in texture, indistinct from the surrounding boundary and difficult to push. 2. Compression symptoms: at the beginning of malignant tumors usually have no obvious symptoms, with the development of malignant tumors will produce compression symptoms on the surrounding tissues and organs, the patient manifested as local swelling and pain, or dysfunction of the compressed organs, and so on. 3. Malignant disease: malignant tumors on the buttocks if continue to develop to the advanced stage can appear body wasting, pale or yellow, fatigue, loss of appetite and other symptoms of malignant disease. It is recommended that patients should consult the doctor in time if they have any discomfort, and actively cooperate with the doctor’s treatment, do not delay the condition.