• (lipoma, benign) A benign neoplasm composed of adipose tissue.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• A benign (not cancer) tumor made of fat cells.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• A benign tumor composed of fat cells (ADIPOCYTES). It can be surrounded by a thin layer of connective tissue (encapsulated), or diffuse without the capsule.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• A benign, usually painless, well-circumscribed lipomatous tumor composed of adipose tissue.
  NCI
  U.S. National Cancer Institute, 2021
• A noncancerous tumor or growth composed of fat cells.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• Benign neoplasia derived from lipoblasts or lipocytes of white or brown fat. May be angiomatous or hibernomatous.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2025
• Lipomas are soft, movable, subcutaneous nodules of adipocytes (fat cells); overlying skin appears normal. Lipomas are very common, benign, and usually solitary, but some patients have multiple lipomas. Common sites are the proximal extremities, trunk, and neck. Multiple lipomas can be familial and/or associated with various syndromes...
  Merck Manuals
  Merck & Co., Inc., 2025
• Lipomas are the most common soft-tissue tumor. These slow-growing, benign fatty tumors form soft, lobulated masses enclosed by a thin, fibrous capsule.
  Medscape
  WebMD, 2025
• A lipoma is a slow-growing, fatty lump that's most often situated between your skin and the underlying muscle layer. A lipoma, which feels doughy and usually isn't tender, moves readily with slight finger pressure. Lipomas are usually detected in middle age. Some people have more than one lipoma.
  Mayo Clinic
  Mayo Foundation for Medical Education and Research, 2025
• Lipomas are slow-growing, benign, mesenchymal tumors that form well-circumscribed, lobulated lesions composed of adipocytes. They are demarcated from surrounding fat by a thin, fibrous capsule. They comprise 50% of soft-tissue neoplasms and are commonly encountered by primary care physicians, surgeons, and pathologists. Lipomas usually...
  Epocrates
  Athenahealth, Inc., 2019