Sentinel Lymph Node Biopsy in Rectal Cancer

After the total mesorectal excision, the indocyanine green was injected around the tumor via the anus. The fluorescence laparoscope was used to visualize and locate the sentinel lymph node, which was then removed and sent for rapid frozen pathological examination. Subsequently, a lateral lymph node dissection was performed.

Indocyanine green was injected around the tumor via the anus to visualize the sentinel lymph nodes under the fluorescence laparoscope.

The fluorescence laparoscope was used to visualize and locate the sentinel lymph node.

The surgical specimens and sentinel lymph nodes were routinely examined for pathology.

The lateral green fluorescence imaging sentinel lymph nodes found during surgery was sent to make cryosections. And then a pathologist makes a rapid diagnosis under a microscope。

"1. Sharply dissect the vascular interface between the pelvic fascia parietal layer and the visceral layer around the mesentery under direct vision to ensure that the rectal mesentery of the resected specimen is intact and tearless.~2. For medium and low rectal cancer: the distal intestinal tube of the tumor should be resected ≥ 2 cm.~3. TME or mesenteric distal resection margin ≥ 5 cm away from the tumor."