Most back lipomas do not cause pain; pain may occur when the lipoma is large and puts pressure on the surrounding tissue. Lipoma is a kind of common soft tissue benign tumor, which is made up of mature fat cells, and it can occur in any part of the body with fat, which is more common in the trunk and limbs under the surface skin; lipoma is mainly manifested as a localized lump, usually small in size and without obvious symptoms; if the lipoma is bigger, and it causes compression to the surrounding tissues, it may cause pain and numbness, etc. Lipoma grows slowly and does not need special treatment if there are no obvious symptoms; if it is bigger, and it causes compression to the surrounding tissues, it may cause pain and numbness. Lipoma grows slowly, if there is no obvious symptom, generally do not need special treatment; if the lipoma is large, pain or affect the aesthetics, etc., you can go to the hospital for further diagnosis and treatment, and if necessary, surgical resection.