Abstract
This case pertains to a 76-year-old woman with a giant cyst in the perineum. Extirpation was performed. The result of a pathological investigation was squamous cell carcinoma arising in an epidermal cyst. An epidermal cyst is necessary to conduct an examination bearing in mind the possibility of a malignant tumour.
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Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.