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  • Title: Collision tumor of malignant skin cancers: a case of melanoma in basal cell carcinoma.
    Author: Papa G, Grandi G, Pascone M.
    Journal: Pathol Res Pract; 2006; 202(9):691-4. PubMed ID: 16876964.
    Abstract:
    The coexistence of two malignant skin tumors intermingling in the same histologic specimen is rare. We report a case of melanoma in a basal cell carcinoma collision tumor. The presence of two intermingled neoplasms was confirmed by immunohistochemistry, which showed strong positivity for S-100 and HMB-45. A review of the literature and a case analysis allow for some pathogenetic and prognostic considerations.
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