A risk scale for predicting extensive subclinical spread of nonmelanoma skin cancer.

BACKGROUNDThe clinical appearance of nonmelanoma skin cancer may represent only a portion of microscopic tumor invasion.OBJECTIVETo develop a scale based on high-risk characteristics for predicting the probability of extensive subclinical spread of nonmelanoma skin cancer.METHODSRetrospective analys