igation of the inferior mesenteric artery (IMA) during colorectal surgery for malignant diseases is burdened by a high rate of complications ranging from anastomotic leak 1 to genitourinary dysfunctions. 2 In 1972, Valdoni et al 3 described the technique to preserve the IMA while performing a rectal resection. In this video, we present a robotic sigmoidectomy with IMA preservation and complete lymphadenectomy according to Valdoni et al. 3 The intervention starts with a gentle traction on the Gruber's ligament to identify the IMA. The peritoneum of the mesosigmoid is incised, and the axilla abdominis of Bacon is carefully exposed. The IMA is dissected along its axis. Left colic artery and all the sigmoid arteries encountered are sectioned. The Jonnesco fold is opened, and the Monk line is incised to mobilize the colon in a lateral-tomedial direction along the avascular plane between Toldt and Gerota fascia. The peritoneal reflection is incised circumferentially starting from the posterior plane where the skeletonized IMA is visible. The avascular holy plane surrounding the upper rectum is opened. The upper rectum is stapled preserving the Mondor hilum. 4 The inferior mesenteric vein is prepared and sectioned to divide the mesentery of the left colon. Specimen is extracted through a Pfannenstiel suvrapubic incision, and a Knight-Griffen anastomosis is performed.The number of retrieved lymph nodes is adequate, and the benefit for the patient could be inherent to a potentially lower risk of leakage. 5 Minimally invasive lymphadenectomy without vessel ligation still remains a demanding procedure, and it is rarely reported by surgeons. 6,7 Despite the heated debate on high versus low ligation of the IMA, 2,8,9 with the advent of robotic surgery, IMA skeletonization and preservation become feasible thanks to magnified view and augmented dexterity.The video follows the Laparoscopic Surgery Video Educational Guidelines for video education. 10 See Video at http://links.lww.com/DCR/B562.