이개에 발생한 각화극세포종양 편평상피암종 치험 1예
A Case of Keratoacanthoma-Like Squamous Cell Carcinoma of the Auricle
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Abstract
Keratoacanthoma (KA) is regarded as a benign skin tumor, but sometimes it is very difficult to distinguish it from well-differentiated squamous cell carcinoma (SCC), especially when SCC has KA-like characteristics. Classical KA has a well-defined craterlike architecture without single cell invasion. We experienced a case of KA-like SCC of the auricle: the patient was 75-year old male with solitary elevated skin lesion on his left auricle. Initial impression was KA and local excision was performed. Histopathological examination revealed central crateriform depression and keratin debris with many atypical and mitotic cells. Recurrence was developed 6 weeks after the operation and secondary excisional surgery was performed. The patient remains in good status with no evidence of recurrence 10months following the operation. (Korean J Otolaryngol 2006;49:225-7)
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