PMC6186361_01
Coronal, transverse, and sagittal views of CT of the abdomen and pelvis showing heterogeneous, partially necrotic mass.
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fig1
The mass was suggestive of a sarcoma or possibly a GIST tumor with malignant degeneration (Figure 1).
Gross image of the resected mass measuring 42 x 31 x 23 cm and weighing 18.5 kg.
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fig2
(a) Low-power H&E stain. (b) High-power H&E stain showing gastric stromal tumor cells with mitosis. (c) DOG-1 stain: strongly positive. (d) CD117 stain: strongly positive.
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fig3
Immunohistochemistry confirmed GIST with strong positive staining for CD117, DOG1, and CD34 (Figure 3).