Sarcomatoid carcinoma after radiotherapy for early-stage oral squamous cell carcinoma: Case report

AbstractRationale:Sarcomatoid carcinoma is a rare variant of squamous cell carcinoma (SCC) with poor prognosis. Previous radiation has been reported as one of the etiologic factors.Patient concerns:We describe a case of a 57-year-old man presented with a painless mass in the left supraclavicular are