Histological Distinction between the Granular and Nongranular Types of Laterally Spreading Tumors of the Colorectum

Table 3

Length of tumor and muscularis mucosae of laterally spreading tumor-granular (LST-G) and laterally spreading tumor-nongranular (LST-NG) types.

	LST-G (16)	LST-NG (16)	value
Length of lesion^a (mm, mean ± SD)	17.28 ± 4.33	13.82 ± 2.84	0.012
Length of muscularis mucosae^b (mm, mean ± SD)	18.48 ± 4.93	14.06 ± 2.95	<0.01
Ratio between b and a (b/a) (mean ± SD)	1.067 ± 0.073	1.016 ± 0.010	0.01