An odontogenic cutaneous sinus tract (OCST) of dental origin is an uncommon and frequently misdiagnosed lesion that is caused by chronic periodontitis. Given that OCSTs often lack symptoms, are located on the lower face, and can have notable variations in clinical appearance, they can be mistaken for more common dermatologic diagnoses such as squamous cell carcinomas (SCCs) and cysts. We present 2 patients with OCSTs who were referred for cutaneous surgery for a rendered diagnosis of an SCC and epidermal cyst. A proper diagnosis was rendered after a high index of suspicion, and clinicopathologic correlation led to additional testing and eventual referral to oral surgery for an OCST.
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