... carcinomas. Of the 50 clinicallyvisible lesions, 20 stained positively with toluidine blueand 6 of these were carcinomas. One of the clinically de-tected carcinomas was dye-negative. Therefore, ... would not otherwise be biopsied.39–41There-fore, the cases assigned a clinical diagnosis of squamous cellcarcinoma should not have been included in the study. In summary, based on the evidence ... ViziLitetechnique.Once again, a major weakness of this study is the lack of diagnostic correlation with biopsy findings. The findings in the current study also diverge notably from the work of oth-ers. For example,...