Presentation
Palpable abdominal mass on physical exam.
Patient Data
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A 72×65 mm mass with internal cystic/ necrotic changes is seen between the left liver lobe and gastric lesser curvature originating from the stomach wall.
A few non-enhanced simple cortical cysts are seen in both kidneys. Two small stones less than 4 mm are seen in the left kidney.
A 15 mm nodule with a mean attenuation value of 8 HU and rapid washout on post contrast images is noted at the left adrenal gland inferring benign adenoma.
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The patient underwent partial gastrectomy and histopathology evaluation confirmed gastrointestinal stromal tumor (GIST).
Case Discussion
It is difficult to differentiate a benign from a malignant GIST on imaging, but exogastric growth, diameter >5 cm, central necrosis, and extension to other organs suggest malignant transformation.