<unk>  is an overgrowth of fibro-fatty tissue along a nerve trunk that often leads to nerve compression. These only occur in the extremities, and often affect the median nerve. They are rare, very slow-growing, and their origin is unknown. It is believed that they may begin growth in response to trauma. They are not encapsulated by any sort of covering or sheath around the growth itself, as opposed to other cysts beneath the skin that often are. This means there are loosely defined margins of this lipoma. Despite this, they are known to be benign.<unk> s are often more firm and tough to the touch than other lipomas. They are slightly mobile under the skin, and compress with pressure.
Neural fibrolipoma
Hamartoma
Ganglion cyst
Keratin implantation cyst
Aggressive angiomyxoma
Littoral cell angioma
Spindle cell lipoma
Malignant acrospiroma