PMC2633001_01
A representative immunohistochemical section of the resected primary tumor - diffuse c-KIT staining.
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F1
C-KIT was positive and the mitotic rate was 60/50 per high power fields (Figure 1).
A section of computerized tomography [CT] scan. Arrow identifies the infrapyloric mesenteric mass.
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F2
At four and half years from diagnosis, an asymptomatic infrapyloric mesenteric mass was identified on a surveillance CT which progressively increase in size over the next two months (Figure 2).
Whole body positron emission tomography [PET]. No abnormal foci of increased metabolism of FDG can be identified.
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F3
A PET scan paradoxically revealed no glucose avidity of this mesenteric tumor (Figure 3).
Hematoxylin & eosin stained section of infrapyrolic mesenteric mass. Spindle shaped fibrocytic/fibroblastic like cells amongst intervening collagen.
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F4
Histopathology showed a tumour mass composed of spindle shaped fibrocytic/fibroblastic like cells amongst intervening collagen (Figure 4) with low mitotic rate (less than 1 per 50 hpf).