Superficial T0 or T1 rectal cancer
Tumor less than 3 cm in diameter.
Tumor involves <30 percent of the bowel lumen circumference.
Tumor is mobile and nonfixed.
Able to achieve clear margins with local excision.
No bad path features: high grade, no lymphovascular or perineural invasion).
●No radiographic evidence of metastatic disease to regional nodes (N0).
●Patient compliant with aggressive postoperative surveillance