cancer cell basal situ squamous adequately skin treated years cervical cancer adequately treated remission cell complete stage currently patient basal malignancy melanomatous cancer skin curatively resected non adequately concurrent basal cancer carcinoma cell prostate cured thyroid gleason impact adequately unlikely adequately cell basal treated squamous skin malignancy carcinoma cancer years carcinomas malignancies basal squamous skin cell treated adequately years past cell basal skin carcinoma squamous malignancy cancer years malignancies active