The Intersphincteric resection (ISR) technique is an alternative for anal preservation in ultra-low rectal cancer. The transanal total mesorectal excision (TaTME) technique might compensate for the deficiencies of ISR in terms of tumor spillage and poor surgical field exposure. Thus, the investigators perform ISR through a transanal endoscopic approach (taE-ISR), seeking to evaluate the value of this innovative technique in anal preservation in ultra-low rectal cancer.
Study Type
OBSERVATIONAL
Enrollment
260
perform ISR using laparoscopy through transanal port
Ruijin Hospital
Shanghai, China
Shanghai Minimally Invasive Surgery Center
Shanghai, China
anal preservation rate
No conversion to APR and closure was closed within 1 year after surgery
Time frame: 1 year after sugery
incidence of Defecation disorders
A Wexner score \>10 indicated the existence of defecation dysfunction
Time frame: 6 months after surgery
incidence of positive distal resection margin
A positive distal resection margin (DRM) was diagnosed with the presence of tumor cells within 1mm from the DRM
Time frame: 30 days after surgery
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