Reasons for unsuccessful single-session EMR (n=79)
| Submucosal fibrosis | 41 |
| Difficult access or positioning | 24 |
| Deep ileocaecal valve or appendiceal orifice involvement | 5 |
| Deliberate two-stage procedure (large lesion size) | 2 |
| Assessed as high risk for SMIC after commencing EMR | 6 |
| Anaesthetic reaction, procedure abandoned | 1 |
EMR, endoscopic mucosal resection; SMIC, submucosal invasive cancer.