Atypical lipoma

Lipomas are among the most commonly encountered soft tissue tumors in clinical practice, though they are rare in the foot. Although a presumptive diagnosis is typically made clinically, those tumors with atypical clinical features may require radiological consultation. Difficulty arises when radiographic features are not typical of lipoma. We present a fatty soft tissue tumor of the foot with nonadipose elements on magnetic resonance imaging evaluation. Differentiation of lipoma variants (e.g., spindle cell lipoma, atypical lipoma, pleomorphic lipoma, lipoblastoma, angiolipoma) from liposarcoma based on imaging features is not possible, necessitating surgical resection for definitive histological diagnosis.

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The Treatment of Atypical Lipoma with Liposuction

The Journal of Dermatologic Surgery and Oncology ◽

10.1111/j.1524-4725.1991.tb01706.x ◽

1991 ◽

Vol 17 (4) ◽

pp. 332-334 ◽

Cited By ~ 21

Author(s):

PARMOD K. SHARMA ◽

CAMILA K. JANNIGER ◽

ROBERT A. SCHWARTZ ◽

GREGORY E. RAUSCHER ◽

W. CLARK LAMBERT

Keyword(s):

Atypical Lipoma

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Liposarcoma in the pharynx

The Journal of Laryngology & Otology ◽

10.1017/s0022215100111053 ◽

1989 ◽

Vol 103 (11) ◽

pp. 1080-1082 ◽

Cited By ~ 8

Author(s):

F. Nofal ◽

M. Thomas

Keyword(s):

Rare Case ◽

Surgical Excision ◽

Pyriform Sinus ◽

Unusual Presentation ◽

Histological Features ◽

Atypical Lipoma

AbstractA rare case of an atypical lipoma in the pyriform sinus is described with an unusual presentation and some difficult histological features. Excision was performed endoscopically, there has been no evidence of recurrence for over a year. External surgical excision is reserved in case of recurrence of the tumour.

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Intermittent claudication caused by a giant atypical lipoma of the thigh

Journal of Vascular Surgery ◽

10.1016/j.jvs.2012.03.242 ◽

2012 ◽

Vol 56 (3) ◽

pp. 808-811 ◽

Cited By ~ 2

Author(s):

Juan Garrido-Gómez ◽

Maria L. Vizoso-Pérez ◽

Jose P. Linares-Palomino ◽

Miguel A. Arrabal-Polo ◽

Encarnacion Cárdenas-Grande

Keyword(s):

Intermittent Claudication ◽

Atypical Lipoma

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Posttraumatic Pseudolipoma (Fat Necrosis) Mimicking Atypical Lipoma or Liposarcoma on MRI

Radiology Case Reports ◽

10.2484/rcr.2007.2.56 ◽

2007 ◽

Author(s):

Kimberly Burkholz

Keyword(s):

Fat Necrosis ◽

Atypical Lipoma

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Dermatology Therapy ◽

10.1007/3-540-29668-9_296 ◽

2004 ◽

pp. 71-71

Keyword(s):

Atypical Lipoma

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Atypical lipoma: Well-differentiated liposarcoma of the orbit with dedifferentiated areas

Orbit ◽

10.1076/orbi.22.4.311.17247 ◽

2003 ◽

Vol 22 (4) ◽

pp. 311-316 ◽

Cited By ~ 8

Author(s):

Neda Stiglmayer ◽

Sonja Jandrokovic ◽

Pavle Miklic ◽

Zdenka Hutinec

Keyword(s):

Atypical Lipoma ◽

Well Differentiated

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A Twenty-Four-Year-Old Woman with Left Flank Lipoma-Like Hibernoma

Case Reports in Oncology ◽

10.1159/000475708 ◽

2017 ◽

Vol 10 (2) ◽

pp. 438-441 ◽

Cited By ~ 2

Author(s):

R.E. Shackelford ◽

M. Al Shaarani ◽

J. Ansari ◽

E. Wei ◽

J. Cotelingam

Keyword(s):

Rare Tumor ◽

Granular Cells ◽

Resonance Imaging ◽

Ki 67 ◽

Left Flank ◽

Atypical Lipoma ◽

History Of ◽

Well Differentiated ◽

Immunohistochemical Analyses ◽

Lipomatous Tumors

A 24-year-old woman presented with a 5-month history of a left flank mass that was painful on palpation. Magnetic resonance imaging revealed a 10.0 × 6.0 × 2.5 cm mass consistent with lipoma. A fatty lobulated mass was excised and subjected to H&E staining and immunohistochemical analyses. The specimen consisted of mature univacuolated adipocytic cells, with intermixed multivacuolated eosinophilic granular cells. No atypia or hyperchromasia was identified. Most of the cells were S100 positive and Ki-67 immunonegative. A diagnosis of a lipoma-like hibernoma was rendered. Hibernomas are rare benign lipomatous tumors that show differentiation toward brown fat. The lipoma-like hibernoma subtype is rare and can be misdiagnosed as atypical lipoma or well-differentiated liposarcoma. Here we describe an example of this rare tumor.

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