Lipoma = benign tumor composed of mature adipocytes
Atypical lipomatous tumor (ALT) = well-differentiated liposarcoma (WDL) superficially or in extremities
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
Ultrasonographic Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Charifa A et al: Lipoma pathology. StatPearls, 2021
Sciot R: MDM2 amplified sarcomas: a literature review. Diagnostics (Basel). 11(3), 2021
Fritchie KJ et al: Lipoma. In Fletcher CDM et al: WHO Classification of Tumours: Soft Tissue and Bone Tumours. 5th ed. IARC Press. 13-5, 2020
Johnson CN et al: Lipomatous soft-tissue tumors. J Am Acad Orthop Surg. 26(22):779-88, 2018
Khashper A et al: Imaging characteristics of spindle cell lipoma and its variants. Skeletal Radiol. 43(5):591-7, 2014
Kirwadi A et al: MR imaging features of spindle cell lipoma. Skeletal Radiol. 43(2):191-6, 2014
Kransdorf MJ et al: Lipomatous tumors. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 3rd ed. Lippincott Williams & Wilkins. 102-5, 2014
Brisson M et al: MRI characteristics of lipoma and atypical lipomatous tumor/well-differentiated liposarcoma: retrospective comparison with histology and MDM2 gene amplification. Skeletal Radiol. 42(5):635-47, 2013
Walker EA et al: Magnetic resonance imaging of benign soft tissue neoplasms in adults. Radiol Clin North Am. 49(6):1197-217, vi, 2011
Walker EA et al: Magnetic resonance imaging of soft-tissue masses. Semin Roentgenol. 45(4):277-97, 2010
Bidault F et al: Liposarcoma or lipoma: does genetics change classic imaging criteria? Eur J Radiol. 72(1):22-6, 2009
Weiss SW et al: Benign lipomatous tumors. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Elsevier. 431-6, 2008
Bancroft LW et al: Benign fatty tumors: classification, clinical course, imaging appearance, and treatment. Skeletal Radiol. 35(10):719-33, 2006
Kransdorf MJ et al: Lipomatous tumors. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 2nd ed. Lippincott Williams & Wilkins. 81-4, 2006
Murphey MD et al: From the archives of the AFIP: benign musculoskeletal lipomatous lesions. Radiographics. 24(5):1433-66, 2004
Kransdorf MJ et al: Imaging of fatty tumors: distinction of lipoma and well-differentiated liposarcoma. Radiology. 224(1):99-104, 2002
Related Anatomy
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Diagnostic Checklist
TERMINOLOGY
Definitions
Lipoma = benign tumor composed of mature adipocytes
Atypical lipomatous tumor (ALT) = well-differentiated liposarcoma (WDL) superficially or in extremities
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
Ultrasonographic Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Charifa A et al: Lipoma pathology. StatPearls, 2021
Sciot R: MDM2 amplified sarcomas: a literature review. Diagnostics (Basel). 11(3), 2021
Fritchie KJ et al: Lipoma. In Fletcher CDM et al: WHO Classification of Tumours: Soft Tissue and Bone Tumours. 5th ed. IARC Press. 13-5, 2020
Johnson CN et al: Lipomatous soft-tissue tumors. J Am Acad Orthop Surg. 26(22):779-88, 2018
Khashper A et al: Imaging characteristics of spindle cell lipoma and its variants. Skeletal Radiol. 43(5):591-7, 2014
Kirwadi A et al: MR imaging features of spindle cell lipoma. Skeletal Radiol. 43(2):191-6, 2014
Kransdorf MJ et al: Lipomatous tumors. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 3rd ed. Lippincott Williams & Wilkins. 102-5, 2014
Brisson M et al: MRI characteristics of lipoma and atypical lipomatous tumor/well-differentiated liposarcoma: retrospective comparison with histology and MDM2 gene amplification. Skeletal Radiol. 42(5):635-47, 2013
Walker EA et al: Magnetic resonance imaging of benign soft tissue neoplasms in adults. Radiol Clin North Am. 49(6):1197-217, vi, 2011
Walker EA et al: Magnetic resonance imaging of soft-tissue masses. Semin Roentgenol. 45(4):277-97, 2010
Bidault F et al: Liposarcoma or lipoma: does genetics change classic imaging criteria? Eur J Radiol. 72(1):22-6, 2009
Weiss SW et al: Benign lipomatous tumors. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Elsevier. 431-6, 2008
Bancroft LW et al: Benign fatty tumors: classification, clinical course, imaging appearance, and treatment. Skeletal Radiol. 35(10):719-33, 2006
Kransdorf MJ et al: Lipomatous tumors. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 2nd ed. Lippincott Williams & Wilkins. 81-4, 2006
Murphey MD et al: From the archives of the AFIP: benign musculoskeletal lipomatous lesions. Radiographics. 24(5):1433-66, 2004
Kransdorf MJ et al: Imaging of fatty tumors: distinction of lipoma and well-differentiated liposarcoma. Radiology. 224(1):99-104, 2002
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