Merkel cell carcinoma: Solitary, fast growing, asymptomatic, red, firm, shifting, smooth lump with atrophic surface; the appearance in the area of UV-exposed areas is characteristic.
Merkel cell carcinoma. solitary, fast growing, asymptomatic, bright red, coarse, shifting, smooth lump with atrophic surface. the appearance in the area of UV-exposed sites is typical.
Merkel cell carcinoma. in the middle and deep dermis, including the subcutaneous fatty tissue, nodular, cell-rich, monomorphic infiltrates. typically the upper parts of the dermis remain free of infiltrates. the epidermis is uninvolved.
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