Lipomas are the most common soft-tissue tumor. These slow-growing, benign fatty tumors form soft, lobulated masses enclosed by a thin, fibrous capsule. Lipomas are common benign mesenchymal tumors. They may develop in virtually all organs throughout the body. The anatomy depends on the tumor site. Subcutaneous lipomas are usually not fixed to the underlying fascia. The fibrous capsule must be removed to prevent recurrence. The cause of lipomas is not completely understood, but the tendency to develop them is inherited.
A minor injury may trigger the growth. Being overweight does not cause lipomas. No treatment is usually necessary for a lipoma. However, if the lipoma bothers, treatments includes, Surgical removal, Steroid injections, Liposuction. Lipomatosis of nerve is a rare condition in which the nerve is infiltrated by mature adipocytes and fibrous tissue.
It is classified under mesenchymal tumors (ICD-0 code 8850/0; WHO Classification of Tumors of the Central Nervous System) but comprehensive literature searching is confounded by multiple synonyms including hamartomatous lipomatosis, fibrolipomatous hamartoma of nerve, and neural fibrolipoma. One of the principal changes in the 2002 WHO Classification of Soft Tissue Tumors was the renaming of fibrolipomatous hamartoma of nerve (1994 WHO Classification) as lipomatosis of nerve.