5 10%
1 13 15cm 3 4cm
2 RS P Rb Ra S RS Ra Rb P 4 S RS
CT MRI Stage 0 Stage I Stage I Stage II Ra Rb P TEM TEM ISR
TEM Transanal endoscopic microsurgery 5cm 4cm
5cm
TEM
1 2 3 10cm RS 6cm Ra 4cm Rb 2cm TME D3 D2 D3 D2 Rb D3
5%
ISR 5cm
+ QOL
5% 5% 4% 6% 2% 1% 30 0.1%
3 2.5cm 2cm
1 2 3 4 1
1 7 M SM MP S SS SE SI A AI NX N0 N1 3 N2 4 N3 HX H0 H1 4 5cm H2 H1 H2 H3 5 5cm PX P0 P1 P2 P3 MX M0 M1
2 1 2 3 4 HE
3
1990 1 2 TME3