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In this video, we present the clinical case of a 66-year-old woman with a sigmoid-rectal junction early stage cancer submitted to laparoscopic resection. Before surgery, the patient was submitted to endoscopy with the objective to mark the distal margin of the neoplasia, and 2mL of ICG were injected into the mucosa of the rectum, 2cm distal to the inferior border of the tumor.
Thanks to the ICG’s fluorescence with the light emitted from the photodynamic eye of our laparoscopic system (Stryker 1588 camera system), it is possible to clearly visualize both the individual lymph nodes and the lymphatic collectors which drain ICG (and lymph) of the specific mucosal area previously marked with indocyanine green.
It was possible to verify the good perfusion of the proximal stump of the anastomosis before the Knight-Griffen anastomosis was performed, thanks to an intravenous injection of ICG.
This technique could allow for a more precise and radical nodal dissection, a safer work respecting vascular and nerve structures, and could be related with a lower risk of anastomotic fistula, controlling the adequate perfusion of the stump.
Methods: The procedure was performed in two phases: first, by an abdominal laparoscopic approach consisting in the high ligation of the inferior mesenteric artery and vein, and complete splenic flexure mobilization. The pelvic dissection was continued in the Total Mesorectal Excision (TME) plane to the level of the puborectal sling posteriorly and of the seminal vesicles anteriorly.
Secondly, the procedure continued by transanal laparoscopic approach: A Lone Star® retractor was placed prior to the platform insertion (Gelpoint Path®). Under direct vision of the tumor, a purse-string suture was performed to obtain a secure distal margin and a completed closure of the lumen. It is essential to achieve a complete circumferential full-thickness rectotomy before facing the dissection cranially via the TME plane. Both planes, transanal and abdominal, are connected by the two surgical teams. The specimen was then extracted through a suprapubic incision. A circular end-to-end stapled anastomosis was made intracorporeally. Finally, a loop ileostomy was performed.
Results: A 75-year-old man with low rectal cancer (uT3N1-Rullier’s I-II classification), was treated with neoadjuvant chemoradiotherapy and TaTME. Operative time was 240 minutes, including 90 minutes for the perineal phase. There were no postoperative complications and the patient was discharged on postoperative day 5. The pathology report showed a complete mesorectum excision and free margins (ypT1N1a).
Conclusions: The TaTME technique is a safe option for the treatment of low rectal cancers, especially in male patients with a narrow pelvis. It is a feasible and reproducible technique for surgeons with previous experience in advanced laparoscopic procedures and transanal surgery.
All these advantages must be applied to old patients with a high BMI. To prevent conversion due to hemodynamic instability, it is mandatory to work with an ultralow intra-abdominal pressure under 8mmHg.
This clinical case demonstrates the feasibility, efficacy, and reproducibility of the minimally invasive approach in an old obese female patient using an ultralow intra-abdominal pressure.
Hilar dissection was performed with lymphadenectomy of the common hepatic artery and left hepatic artery.
Before parenchymal transection, both inflow and outflow of the left liver were interrupted. The left hepatic artery and the left portal vein were isolated and divided between clips. The left hepatic vein was isolated after division of the Arantius’ ligament and clamped by means of a laparoscopic vascular clamp. Parenchymal transection was carried out using an ultrasonic dissector (CUSA™), and hemostasis was controlled with a radiofrequency bipolar hemostatic sealer (Aquamantys™) and clips. The biliary duct and the left hepatic vein were managed with vascular staplers. At the end of the operation, a tubular drain was placed. Operative time accounted for 240 minutes and total blood loss was 100mL.
The postoperative course was uneventful and the patient was discharged on postoperative day 6.
The pathology confirmed a 5cm G3 cholangiocarcinoma with invasion of the left hepatic vein and of segment 2 portal branch. Resection margins were negative for tumor invasion and for all lymph nodes retrieved.