Study: NCT04977882

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: abdominal drainage
Description: 19 Fr abdominal drainage placed intraoperatively in right colic gutter

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Postoperative antibiotico-prophylaxis
Description: Ceftriaxone 2 gr and Metronidazole 1.5 gr per day for 2 days postoperatively

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Laparoscopic radical right colectomy with CME and D3 lymphadenectomy (RRC)
Description: the dissection starts over the landmark given by SMV. The SMV is freed anteriorly and on its right-hand side from all the lympho-adipose tissue. Once the SMV is fully exposed, the IC vessels are dissected and divided at the junction with the efferent vessels. The dissection moves upward along the same dissection line to identify the right colic vein and the GCTH. No medial to later dissection is carried out until the SMV is completely exposed before reaching the uncinate process of the pancreas. At this point the veins to the right colon are divided but gastroepiploic vein and artery are preserved unless the tumor is located at the hepatic flexure. The divided mesentery is lifted and tilted to the right, and the medial-to-later dissection starts following the embryological plane over Fredet's fascia. The mesocolon is divided on the right side of the middle colic artery and the right branches of the middle colic vessels are divided.

Intervention type: PROCEDURE
Group type: SHAM_COMPARATOR
Intervention: Laparoscopic radical right colectomy with CME and D3 lymphadenectomy (RRC)
Description: the dissection starts over the landmark given by SMV. The SMV is freed anteriorly and on its right-hand side from all the lympho-adipose tissue. Once the SMV is fully exposed, the IC vessels are dissected and divided at the junction with the efferent vessels. The dissection moves upward along the same dissection line to identify the right colic vein and the GCTH. No medial to later dissection is carried out until the SMV is completely exposed before reaching the uncinate process of the pancreas. At this point the veins to the right colon are divided but gastroepiploic vein and artery are preserved unless the tumor is located at the hepatic flexure. The divided mesentery is lifted and tilted to the right, and the medial-to-later dissection starts following the embryological plane over Fredet's fascia. The mesocolon is divided on the right side of the middle colic artery and the right branches of the middle colic vessels are divided.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Laparoscopic radical right colectomy with CME and D3 lymphadenectomy (RRC)
Description: the dissection starts over the landmark given by SMV. The SMV is freed anteriorly and on its right-hand side from all the lympho-adipose tissue. Once the SMV is fully exposed, the IC vessels are dissected and divided at the junction with the efferent vessels. The dissection moves upward along the same dissection line to identify the right colic vein and the GCTH. No medial to later dissection is carried out until the SMV is completely exposed before reaching the uncinate process of the pancreas. At this point the veins to the right colon are divided but gastroepiploic vein and artery are preserved unless the tumor is located at the hepatic flexure. The divided mesentery is lifted and tilted to the right, and the medial-to-later dissection starts following the embryological plane over Fredet's fascia. The mesocolon is divided on the right side of the middle colic artery and the right branches of the middle colic vessels are divided.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Laparoscopic standard D2 right hemicolectomy (STANDARD)
Description: A medial-to-lateral surgical dissection and high tie of the ileocolic vessels (IC) is undertaken without dissecting the anterior surface of the superior mesenteric vein (SMV). The gastro-colic trunk of Henle (GCTH) is not isolated and the right colic vein (when present) and the right branches of the middle colic vessels are taken more peripherical, during the division of the transverse mesocolon. The right gastroepiploic vessels are not dissected, nor divided, unless in proximity of the tumor

Intervention type: PROCEDURE
Group type: SHAM_COMPARATOR
Intervention: Laparoscopic standard D2 right hemicolectomy (STANDARD)
Description: A medial-to-lateral surgical dissection and high tie of the ileocolic vessels (IC) is undertaken without dissecting the anterior surface of the superior mesenteric vein (SMV). The gastro-colic trunk of Henle (GCTH) is not isolated and the right colic vein (when present) and the right branches of the middle colic vessels are taken more peripherical, during the division of the transverse mesocolon. The right gastroepiploic vessels are not dissected, nor divided, unless in proximity of the tumor

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Laparoscopic standard D2 right hemicolectomy (STANDARD)
Description: A medial-to-lateral surgical dissection and high tie of the ileocolic vessels (IC) is undertaken without dissecting the anterior surface of the superior mesenteric vein (SMV). The gastro-colic trunk of Henle (GCTH) is not isolated and the right colic vein (when present) and the right branches of the middle colic vessels are taken more peripherical, during the division of the transverse mesocolon. The right gastroepiploic vessels are not dissected, nor divided, unless in proximity of the tumor