Difficult colorectal polypectomy: Technical tips and recent advances

Table 4 Indications for colorectal endoscopic submucosal dissection[10]

	Lesions requiring enbloc resection
1	Lesions which en bloc resection with EMR is difficult
	LST-NG, particularly LST-NG with pseudo-depressed type
	Lesions with VI-type pit pattern
	Carcinoma with shallow T1 invasion
	Large depressed-type tumor
	Large protruded-type lesions suspected to be carcinoma
2	Mucosal tumors with submucosal fibrosis
3	Sporadic tumors in conditions of chronic inflammation such as ulcerative colitis
4	Local residual or recurrent early carcinomas after endoscopic resection

EMR: Endoscopic mucosal resection; LST-NG: Laterally spreading tumor non-granular type.