Table 2.

Nottingham grade (a) and histologic features (b–d).

a	Nottingham grade	Frequency	Percent
	Grade 1	32	29.36
	Grade 2	43	39.45
	Grade 3	34	31.19
b	Tubule formation	Frequency	Percent
	Score 1	8	7.34
	Score 2	20	18.35
	Score 3	81	74.31
c	Pleomorphism	Frequency	Percent
	Score 1	13	11.93
	Score 2	68	62.39
	Score 3	28	25.69
d	Mitoses	Frequency	Percent
	Score 1	66	60.55
	Score 2	26	23.85
	Score 3	17	15.6