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Focally Pigmented Pink Plaque on the Back—Diagnosis

Arch Dermatol. 2010;146(7):789-794. doi:10.1001/archdermatol.2010.153-b.
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Boyd  ASRapini  RP Cutaneous collision tumor: an analysis of 69 cases and review of the literature. Am J Dermatopathol 1994;16 (3) 253- 257
PubMed Link to Article[[XSLOpenURL/10.1097/00000372-199406000-00005]]
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