Age

18–80

Sex

ALL

Healthy volunteers

Not accepted

Colorectal cancer with pathological results.
Colorectal cancer preliminary diagnosed during colonoscopy.
No confirmed metastasis.
No comorbidity of other malignancy.
The primary tumor is less than 10 cm.
No organ dysfunction.
The patient and his families totally agree with the whole investigative procedure, and sign the written informed consent form.

Diagnosed with any other malignancy within 5 years.
Comorbidity of emergent conditions like perforation.
Former colorectal surgery history which may affects digestive tract reconstruction.
Need combined organ resection.
ASA grade IV or V.
Pregnant or lactating Women.
Severe mental diseases.
Severe cardiopulmonary diseases which reduce operation tolerance.
Systematic steroid therapy lasting for more than 1 month.
Intolerant of laparoscopy.
No written informed consent form signed.

Survival Outcome After Minilaparotomy for the Treatment of Colorectal Cancer