PMC3810228_01
Histopathologic findings: transition area between appendiceal cells (black arrow) and tumoral cells (green arrow) (X200)
PAMJ-15-85-g001.jpg
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F0001
Histology showed a monotonous spindle morphology characteristic of GISTs, with irregular fascicles and variably sclerosed stroma (Figure 1, Figure 2).
Histopathologic findings: monotonous spindle morphology with irregular fascicles and variably sclerosed stroma (X400)
PAMJ-15-85-g002.jpg
PMC3810228_01_PAMJ-15-85-g002.jpg
F0002
Histology showed a monotonous spindle morphology characteristic of GISTs, with irregular fascicles and variably sclerosed stroma (Figure 1, Figure 2).
Immunohistochemical findings. Positive staining with CD34
PAMJ-15-85-g003.jpg
PMC3810228_01_PAMJ-15-85-g003.jpg
F0003
The tumor showed strong expression of CD34 (Figure 3) and CD117 but was negative for desmin, h-caldesmon, SMA, and S-100.