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Initial Evaluation: Keratoacanthoma Keratoacanthomas are rapidly-growing (within few weeks) nodular proliferations of keratinocytes that may represent a variant of squamous cell carcinoma. In some cases, lesions are self-involuting over a period of few months. They should be closely monitored for complete involution, or alternatively, managed with complete surgical excision. Intralesional chemotherapy, such as with bleomycin, […]