. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: Am J Surg Pathol. 2012 Jun;36(6):876–882. doi: 10.1097/PAS.0b013e31824e133f

Table 3.

BRAF mutation according to polyp subtype and location.

Polyp subtype	BRAF, n (%)			P value, proximal vs. distal
Polyp subtype	Proximal	Distal	Overall^*	P value, proximal vs. distal
Tubular adenoma	1/12 (8)	0/10 (0)	1/32 (3)	1
Tubulovillous adenoma	0/0 (0)	0/4 (0)	0/9 (0)	NA
Microvesicular hyperplastic polyp	27/36 (75)	42/53 (79)	80/105 (76)	0.64
Goblet cell hyperplastic polyp	0/5 (0)	0/12 (0)	0/20 (0)	NA
Sessile serrated adenoma/polyp	32/35 (91)	10/15 (67)	60/71 (85)	0.029
Sessile serrated adenoma/polyp with dysplasia	9/10 (90)	8/8 (100)	19/20 (95)	1
Traditional serrated adenoma	5/10 (50)	1/2 (50)	7/13 (54)	1

The overall number for each polyp subtype also comprises polyps with unknown location;

NA: not assessable.