PMC5794390_01
The maximum intensity projection image of PET showed intense FDG uptake in the left upper abdomen (arrow). FDG = fluoro-2-deoxy-d-glucose, PET = positron emission tomography.
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F1
The scan further revealed thickened left diaphragm, increased FDG metabolism, an SUVmax of 6.3, an indistinct interface between lesions and abdominal aorta, and local thickening of the left retroperitoneum with increased FDG metabolism and an SUVmax of 2.8 (Figs. 1 and 2).
Axial low-dose CT (left), PET (center), and fused PET/CT (right) images showed that there was intense FDG uptake in both thickening gastric cardia with an SUVmax of 5.7 (A, B, C) and thickening left diaphragmatic crura with an SUVmax of 6.3 (D, E, F). Meanwhile, localized thickening of left retroperitoneala had mild 18F-FDG uptake with a SUVmax of 2.8 (G, H, I) (arrow). FDG = fluoro-2-deoxy-d-glucose, PET/CT = positron emission tomography/computed tomography, SUVmax = maximum standardized uptake value.
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F2
The scan further revealed thickened left diaphragm, increased FDG metabolism, an SUVmax of 6.3, an indistinct interface between lesions and abdominal aorta, and local thickening of the left retroperitoneum with increased FDG metabolism and an SUVmax of 2.8 (Figs. 1 and 2).
Micrographs revealing the histological appearance of the tumor. Hematoxylin and eosin stain revealed spindle cells arranged in long fascicles (magnification, x400), and mitosis was found (A). The tumor cells were positive for SMA (B) and Vim (C) (magnification, x200). SMA = smooth muscle actin, Vim = vimentin.
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F3
Immunohistochemistry data (Fig. 3) were as follows: vimentin (Vim) (+), smooth muscle actin (SMA) (+), cytokeratin (CK) (-), CEA (-), P53 (+), CD117 (-), CD34 lesion (+), Dog-1 (-), S-100 (-), desmin (-), fibronectin (FN) (+), beta-catenin (-), and Ki67 (10%+).