Table 1: Patient and lesion characteristics.

Patient ageMedian 69 years, range 37–85
Sex17 male (65%), 9 female (35%)
Lesion sizeMedian 20 mm, range 10–50 mm
LocationRight colon or transverse 17 (65%)
Descending or sigmoid 8 (31%)
Rectum 1 (4%)
MorphologySessile 18 (69%)
Flat 8 (31%)
Prior therapyPartial polypectomy 17 (65%)
Tattoo under lesion 4 (15%)
Biopsy only 3 (12%)
Lesion at surgical anastomosis 1 (4%)
Lesion involving diverticulum 1 (4%)
NonliftingCompletely nonlifting 12 (46%)
Nonlifting on one side 11 (42%)
Nonlifting in center 3 (12%)
PathologyInvasive cancer 1 (4%)
High grade dysplasia 2 (8%)
Adenoma 23 (88%)
Technical successPiecemeal EMR with APC 19 (73%)
One piece EMR with APC 3 (12%)
One piece EMR without APC 3 (12%)
EMR abandoned (technical inability) 1 (4%)
ComplicationsBleeding 1 (4%)
Perforation 0 (0%)

Recurrent adenoma 5 of 19 patients who had repeat colonoscopy (26%).