Endoscopic mucosal resection of colorectal adenomas > 20 mm: Risk factors for recurrence

Table 1 Characteristics of the resected lesions n (%)

No. of polyps	n = 216
Size (median/range)	30 mm (20.0-70.0)
Localization
Right-sided colon (cecum, ascending, transverse)	149 (69.0)
Left-sided colon (descending, sigmoid) or rectum	67 (31.0)
Morphology of polyps (Paris classification[31])
Pedunculated (0-Ip)	31 (14.4)
Non-pedunculated (0-Is; 0-IIa/b/c)	185 (85.6)
Resection in piecemeal technique	170 (78.7)
Final histology
Low-risk invasive adeno-carcinoma	4 (1.9)
Tubular-villous adenoma	102 (47.2)
Tubular adenoma	65 (30.1)
Serrated adenoma	45 (20.8)