Gastric lipoma

Dr Henry Knipe et al.

Gastric lipomas are a location-specific subtype of gastrointestinal lipomas and represent a rare benign mesenchymal tumours of the stomach. They can be definitively diagnosed on CT. 

Gastric lipomas are rare, accounting for <5% of gastrointestinal lipomas and <1% of all gastric neoplasms 2

Patients may present with pain, upper gastrointestinal bleeding, dyspepsia and/or gastric outlet obstruction, although they are typically asymptomatic when small. 

Gastric lipomas are typically sessile in morphology, solitary (75%) and most frequently located in the gastric antrum. They tend to be submucosal rather than subserosal. Gastric ulceration is common. 

Histology

Gastric lipomas are composed of mature adipose cells surrounded by a fibrous capsule. 

Fluoroscopy

Features are non-specific on upper gastrointestinal contrast studies with filling defects and a central bulls-eye, reflecting ulceration common 2,3

CT

Gastric lipomas present as well-defined, homogenous fat-density lesions (-70 to -120 is diagnostic) 2.

  • on fluoroscopic studies, GIST should always be considered 4
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Article information

rID: 33401
Section: Pathology
Synonyms or Alternate Spellings:
  • Gastric lipomas
  • Lipoma of the stomach
  • Lipomas of the stomach
  • Gastric lipomata

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