Table 1.

Classification of serrated colorectal lesions (4th edition).

Serrated Colorectal Lesions Classification (2010 WHO 4th Edition)
Histological type	Histological sub-type
Hyperplastic polyp (HP)	Microvescicular type (MVHP) Goblet-cell rich type (GCHP) Mucin-poor type (MPHP)
Sessile serrated adenoma/polyp (SSA/P)	SSA/P with dysplasia SSA/P without dysplasia
Traditional serrated adenoma (TSA)