Table 1. Characteristics and therapeutic results for the enrolled patients.

Patient	Age	Sex	Tumor location	Procedure time, min	Size of resected specimen/tumor, mm	Macroscopic classification	Pathological diagnosis	R0/Curative resection	Adverse events
1	58	F	Sigmoid colon	20	34/27	LST-NG	Category 4	Yes/Yes	None
2	41	M	Cecum	15	32/25	LST-NG	Category 3	Yes/Yes	Delayed bleeding
3	58	M	Ascending colon	19	25/20	LST-NG	Category 3	Yes/Yes	None
4	52	M	Transverse colon	8	30/28	LST-G	Category 3	Yes/Yes	None
5	62	M	Descending colon	20	30/30	LST-NG	Category 4	Yes/Yes	None
6	68	M	Rectum	25	40/32	LST-G	Category 4	Yes/Yes	None
7	70	M	Ascending colon	16	25/24	LST-NG	Category 4	Yes/Yes	None
8	54	M	Cecum	12	35/25	LST-NG	Category 3	Yes/Yes	None
9	52	F	Sigmoid colon	15	28/26	LST-NG	Category 4	Yes/Yes	None
10	61	M	Cecum	11	26/22	LST-G	Category 3	Yes/Yes	None

Abbreviations: LST-G, granular-type laterally spreading tumor; LST-NG, non-granular-type laterally spreading tumor.

NOTE: The pathological examination was performed using the Vienna classification ⁴ . Category 3 corresponds to low grade adenoma. Category 4 included both high grade adenoma and non-invasive carcinoma. R0 resection was defined as a complete resection with negative lateral and vertical margins when examined pathologically. Curative resection was achieved when both the lateral and vertical margins of the specimen were free of carcinoma and no findings of submucosal deep invasion (> 1000 μm) from the muscularis mucosae, lymphatic invasion, vascular involvement or poorly differentiated component were present.