How often does squamous cell carcinoma of the skin metastasize? pls don't say "not often". ie. 1%, 2%, etc is what i am wondering- thanks

Rarely!: I would say the chances of metastases are somewhere between 1% or less. It depends on the degree of differentiation and the size of the primary lesion before it was removed. Poorly differentiated squamous cell carcinomas , if more than 1-2 cm in size have a higher risk for metastases...up to 5% to 10%. I hope this helps. Send us the pathology report, then we can be more exacting in our response.