In other words, dysplastic changes as a sign of fieldcancerization is really underestimated and not well-studied yet.
换句话说，不典型增生，作为区域性癌变标志，目前来说被严重地低估，也没有被很好的研究。
2
The applications of AFB include localization of roentgenographically occult lung cancer, detection of synchronous tumors, estimation of the extent of fieldcancerization, chemoprevention studies, etc.