Gastrointestinal Stromal tumor (GIST) (10 of 13)
Case description
CT is ideal in defining the endoluminal and exophytic extent of tumor.
Smaller GISTs appear as smooth, sharply defined intramural masses with homogenous attenuation.
Larger GISTs with necrosis appear as heterogeneous masses with enhancing borders of variable thickness and irregular central areas of fluid, air, or oral contrast attenuation that reflect necrosis
Occasionally, dense focal calcifications
Overlying mucosal ulcerations and extension into nearby structures may be present.
Smaller GISTs appear as smooth, sharply defined intramural masses with homogenous attenuation.
Larger GISTs with necrosis appear as heterogeneous masses with enhancing borders of variable thickness and irregular central areas of fluid, air, or oral contrast attenuation that reflect necrosis
Occasionally, dense focal calcifications
Overlying mucosal ulcerations and extension into nearby structures may be present.
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