cellular atypia is also seen in other benign lymphoid infiltrates
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actinic reticuloid
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arthropod bite reactions
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chronic contact dermatitis
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lymphocytoma cutis
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angiolymphoid hyperplasia with eosinophilia
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the discrepancy between a benign clinical course and histologic findings suggestive of malignancy is noted as well in: keratoacanthomas, Spitz nevi, and nodular fasciitis