Table 1:

HISTOLOGIC GRADING CRITERIA

GRADE	Histologic criteria
1	Normal -sized nuclei or only mild nucleomegaly, no or only mild hyperchromasia, no mitoses, no nuclear stratification, no loss of cell polarity.
2	Moderate nucleomegaly and hyperchromasia, occasional mitoses, mild variation in nuclear size and contour, focal nuclear stratification and loss of polarity.
3	Marked nuclear enlargement, elongation and hyperchromaticiy, often with nuclear irregularity, frequent mitoses, diffuse concentric nuclear stratification and loss of polarity.