gastric lipoma

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

Epidemiology

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

Clinical presentation

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

Pathology

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.

Radiographic features

Fluoroscopy

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

CT

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

Differential diagnosis

• on fluoroscopic studies, GIST should always be considered

Siehe auch:

• Leiomyom des Magens
• Lipome des Gastrointestinaltraktes
• Magenneoplasien
• benigne Tumoren des Magens
• fettige Infiltration der Magenwand

und weiter:

• gastrointestinale Lipomatose