Laparoscopic Caudate Resection: How to Safely Manage the Spiegel/IVC Interface.

ABSTRACT

BACKGROUND: Minimally invasive caudate lobectomy, or even paracaval caudate resection, can be associated with significant bleeding due to its abutment of inferior vena cava (IVC), portal pedicle and hepatic veins.1-3 This risk can be magnified by cirrhosis as well as response to neoadjuvant therapy (a common phenomenon after excellent response to neoadjuvant chemotherapy), leading to obliteration or even fusion of the hepato-caval space.4-7 PATIENT A 68-year-old female with stage IVa colorectal adenocarcinoma was found to have a single liver metastasis (3.8 × 3.1 cm) in the paracaval caudate lobe. The patient received four cycles of neoadjuvant chemotherapy, leading to inflammatory fusion of the hepato-caval space. Despite this, the patient underwent a safe laparoscopic Spiegel process resection. TECHNIQUE Prior to surgery, three-dimensional liver and port site modeling was performed to optimize the understanding of the spatial relationship between the tumor, IVC, and portal-hepatic veins. Following inflow control of portal veinous branches, the fused hepato-caval space was dissected. The adhesions were then sharply dissected to mobilize the paracaval caudate lobe off the IVC. Using scissors rather than an energy device reduced the risk of inadvertent thermal injury to the IVC. CONCLUSION: Preoperative virtual hepatectomy facilitates surgical planning, increasing the understanding of the tumor/vessel relationship and port placement. In case of a fused hepato-caval space, low central venous pressure and judicious management of short hepatic vein branches are the key for a successful dissection. Moreover, anticipation of a fused hepato-caval space and its strategic management are paramount when performing a minimally invasive caudate resection.