PMC2840409_01
Dermal solar degeneration and dark tumor nodule in the subcutaneous tissue.
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fig1
Microscopic examination revealed an intact atrophic epidermis, solar elastosis of the dermis, and several dark tumor nodules in the subcutaneous adipose tissue (Figures 1 and 2).
Undifferentiated dark epitheliod neoplastic infiltrates within the adipose tissue.
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fig2
Microscopic examination revealed an intact atrophic epidermis, solar elastosis of the dermis, and several dark tumor nodules in the subcutaneous adipose tissue (Figures 1 and 2).
The neoplastic cells show vague cell borders, large pleomorphic nuclei, and numerous mitotic figures.
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fig3
The neoplasm was composed of dark, small undifferentiated cells with ill-defined cell borders showing large hyperchromatic nuclei with numerous mitotic figures (Figure 3).
The tumor cells are positive for CK20 and show a "dot-like" pattern of staining.
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fig4
The tumor cells stained positively for CK 20 showing a "dot-like" pattern (Figure 4) and were also positive for chromogranin (Figure 5) and synaptophysin (Figure 6).
The tumor cells are positive for chromogranin.
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fig5
The tumor cells stained positively for CK 20 showing a "dot-like" pattern (Figure 4) and were also positive for chromogranin (Figure 5) and synaptophysin (Figure 6).
The tumor cells are positive for synaptophysin.
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fig6
The tumor cells stained positively for CK 20 showing a "dot-like" pattern (Figure 4) and were also positive for chromogranin (Figure 5) and synaptophysin (Figure 6).