Pancreatic lipoma

Pancreatic lipomas are uncommon mesenchymal tumors of the pancreas.

Rarely symptomatic, they are most often detected incidentally on cross-sectional imaging for another purpose. If they do cause symptoms, it will typically be those related to regional mass effect from the mass.

Mature fat cells with thin internal fibrous septa. It differs from pancreatic lipomatosis in that it has well-defined margins conferred by a thin collagen capsule.

Correct diagnosis is important to avoid confusion with a neoplastic process. Most contain macroscopic fat.

  • difficult to diagnose: may be hyperechoic or hypoechoic
  • well-circumscribed, lobulated lesion in the pancreas
  • generally fat attenuation (≤ -30 HU)
  • non-enhancing
  • well-circumscribed, lobulated lesion in the pancreas
  • T1 and T2 hyperintense
  • saturates on a fat-saturated sequence
  • may not be hypointense on an out-of-phase sequence (edge may show "india-ink" artefact)

They are benign lesions, and only rarely require resection.

Pancreatic pathology
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Article information

rID: 42872
Synonyms or Alternate Spellings:
  • Pancreatic lipomas
  • Lipoma of the pancreas
  • Lipomas of the pancreas

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Cases and figures

  • Case 1: lipoma in the head of the pancreas
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  • Case 2: lipoma in the head of the pancreas
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  • Case 3: lipoma in the body of the pancreas
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  • Case 4
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  • Case 5
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