PMC9949283_01
PMC9949283_02
A) axial; B) sagittal views of abdominal CT scan revealing a large mixed echogenic mass arising from the gastric wall involving the surrounding organs (arrow); C) showing lung metastasis (arrow)
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F1
There were multiple metastases of the lung, liver, and multiple pulmonary and mesenteric lymphadenopathies (Figure 1 A,B).
A) the tumor showing a fascicular growth pattern of smooth muscle cells with cigar-shaped nuclei; B) abnormal mitosis; C) pleomorphism; D) and massive coagulative type necrosis
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F2
The histopathology was reviewed by an expert pathologist, which showed a fascicular growth pattern of smooth muscle tumor and nuclear pleomorphism suggestive of a high-grade gastric LMS (Figure 2 A,B,C,D).
A) immunohistochemistry showing that tumor cells are positive for SMA; B) negative for CD117; C) CD34; D) and S100
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F3
Tumor cells expressed were positive for SMA and negative for CD34, CD117, and S100 (Figure 3 A,B,C,D).