Gastrointestinal stromal tumor of the stomach

Case contributed by Dr Mohammadtaghi Niknejad

Presentation

Palpable abdominal mass on physical exam.

Patient Data

Age: 65 years
Gender: Male

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.

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.

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