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Table 6 Characteristics of serrated adenocarcinomas according to the serrated adenoma type

From: Clinicopathologic and endoscopic features of early-stage colorectal serrated adenocarcinoma

Variables TSA (n = 27) SSA/P (n = 5) Unclassified (n = 5) Non-serrated adenoma (n = 3)
Sex (male/female) 16/11 3/2 3/2 1/2
Average age (years) 69.1 69.0 68.6 73.3
Location (proximal colon/distal colon/rectum) 7/1/19 5/0/0 2/1/2 2/0/1
Average size (mm) 42.6a 17.2b 34.0 18.3c
Invasion depth (Tis/T1) 24/3d 1/4e 0/5f 0/3g
Epithelial serration (+/−) 6/21 3/2 5/0 3/0
  1. TSA traditional serrated adenoma, SSA/P serrated adenoma/polyp
  2. a vs. b and c, d vs. e, f, and g: p < 0.01