The Ljubljana Classification and WHO 2005 Classification

Comparing the two classifications, one should be aware that there is no simple relationship and overlapping between the WHO 2005 and the Ljubljana classifications Table 1.1 . The group of the so-called benign lesions, including squamous and basal-parabasal cell abnormal hyperplasia is comparable in both classifications. Disagreement starts with the presumption of the WHO 2005 classification 381 that each grade of the whole series of dyspla-sia is considered to be a precursor or potentially...