Hard lump on the back kidney area when touching may be subcutaneous lipoma, or it may be caused by kidney diseases such as kidney abscess and kidney cancer, you should seek medical advice for examination to clarify the condition. Subcutaneous lipoma is a common benign tumor that can occur in various places of human body, as long as there is fat present, lipoma can exist. Lipoma usually has no obvious clinical symptoms in the early stage, with the enlargement of the lipoma, an irregularly shaped benign lump with medium texture and moderate mobility can be clearly felt on the surface of the body, and there is usually no obvious pressure pain. In the case of diseases such as renal abscess, some patients will have a hard lump in the kidney area when palpated. In addition to the above symptoms, there may also be chills, fever, back pain, lumbar muscle tension and other symptoms. In the case of hard lumps in the kidney area of the back, you should consult a doctor as soon as possible, ask the doctor to clarify the cause of the disease, and carry out relevant treatment if necessary.