Lipoma is a benign growth of the subcutaneous fat tissue. It tends to form on the trunk, shoulders, neck, but can appear elsewhere on the body and appears as solitary nodule or in groups. It has a firm, rubbery consistency. It is usually asymptomatic, but it can cause pain when it compresses nerves around it when it grow big enough.
Lipoma does not need to be removed unless there is a cosmetic concern, a compression of surrounding structures, or an uncertain diagnosis. If necessary, it can be removed easily by excision.