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Figure 2: Histopathology and immunohistochemistry studies. (a) Photomicrograph showing a group of elongated and small-sized blood vessels infiltrating between skeletal muscle fibers and fat. This arrangement can result in diagnostic challenge for pathologists, especially in frozen section diagnosis (hematoxylin and eosin stain (H and E), 100 ) (b) Photomicrograph showing retiform and elongated vessels with "slit-like" lumens (arrow head; H and E, ×400 ). (C) Shows strong positive staining with CD34 (endothelial marker) |
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