CRC	Colorectal cancer
MAC	Mucinous adenocarcinoma
WHO	World Health organization
NMAC	Non-mucinous adenocarcinoma
CT	Chemotherapy
CRT	Chemoradiotherapy
RT	Radiotherapy
RC	Rectal cancer
SCRT	Short-course radiotherapy
LCRT	Long-course radiotherapy
TME	Total mesorectal excision
MRI	Magnetic resonance imaging
OS	Overall survival
CSS	Cancer specific survival
DFS	Disease-free survival
DRFS	Distant-recurrence-free survival
LRFS	Local-recurrence-free survival
APR	Abdominoperineal resection
TEM	Trans endoscopic microsurgery
HR	Hazard ratio
CI	Confidence interval
ESMO	European Society of Medical Oncology