Transanal minimally invasive surgery for local excision

Abstract

1. Proper patient selection with appropriate rectal lesions for TAMIS. 2. Patient positioning in high lithotomy position under general anesthesia. 3. Access the distal rectum with transanal multichannel port and establishment of pneumorectum. 4. Mark out appropriate resection margin of target lesion. 5. Excision of lesion beginning with distal margin and performing submucosal or full-thickness resection. 6. Closure of rectal defect.