Verify with a prospective randomised trial if intracorporeal mechanical anastomosis in laparoscopic right colectomy reduces post-operative bowel canalisation time and length of stay in comparison with extracorporeal mechanical anastomosis.

Inclusion Criteria:

• Age 18 or more
• Benign o neoplastic disease of right colon
• Elective laparoscopic surgery

Exclusion Criteria:

• Emergency surgery
• Adhesion or infiltration of near organs
• Severe heart disease ( New York Heart Association class > 3 )
• Severe respiratory disease ( arterial PO2 < 70 torr )
• Severe Liver disease (Child-Pugh class C)
• Ongoing infections
• Number of plasmatic neutrophil < a 2.0 x 10 9/L
• Other contraindications to laparoscopy