Overview
A central tumor, solved without sacrificing the sides.
A mesohepatectomy — also called a central hepatectomy — removes segments 4, 5, and 8 of the liver while preserving both the lateral left lobe (segments 2 and 3) and the lateral right lobe (segments 6 and 7). It is the right operation when a tumor sits in the central liver and a standard extended right or left hepatectomy would remove far too much healthy tissue. By saving the lateral segments on both sides, mesohepatectomy preserves more functioning liver and dramatically reduces the risk of post-hepatectomy liver insufficiency for the right patients.
The trade-off is technical complexity. Two parenchymal transection planes are needed instead of one — one along the falciform ligament on the left and another along the right portal fissure on the right. The middle hepatic vein has to be carefully controlled and divided. The bile-duct anatomy is more demanding because the central ducts are removed and the lateral ducts have to remain perfectly drained. This is specialist HPB work that depends on high-quality preoperative imaging, intraoperative ultrasound, and an experienced operating team.
Who is a candidate?
Patients with a tumor centered in segments 4, 5, and/or 8 whose lateral right and lateral left segments are free of disease are candidates. This is most commonly considered for centrally located colorectal liver metastases, central hepatocellular carcinomas in patients with limited liver reserve, gallbladder cancer that has invaded the liver bed, and selected hilar tumors. We review every case at multidisciplinary tumor board to confirm that mesohepatectomy is the right choice — and to decide on the order of operation, ablation, and systemic therapy.
How we perform it
You are asleep under general anesthesia with epidural pain control. The abdomen is entered through an upper-abdominal incision. Intraoperative ultrasound confirms the tumor and the segmental anatomy. We isolate the segmental inflow to segments 4 and right anterior section (5 and 8), divide the relevant arterial and portal branches, and watch for the color change that marks the transection planes. The first parenchymal plane is divided along the falciform ligament. The second is divided along the right portal fissure. The middle hepatic vein is taken with the specimen. Both cut surfaces are checked for bleeding and bile leak before closure.
Recovery
Most patients stay 5–7 days in the hospital. The first day or two are spent in step-down level care while liver function is monitored. You will walk and start a regular diet within a day or two. We follow up at 2 weeks, repeat labs at 6 weeks, and image at 3 months. Recovery is similar to a major hepatectomy but post-hepatectomy liver insufficiency is uncommon because so much liver is preserved.
Why Florida Surgical
Mesohepatectomy is high-specialty HPB work. Dr. Shaw is fellowship-trained in hepato-pancreato-biliary surgery and surgical oncology and has specific experience with central liver resections, vascular control of the middle hepatic vein, and biliary reconstruction. Every case is planned in advance with detailed cross-sectional imaging and presented at multidisciplinary tumor board so the operation is paired with the right systemic therapy.
Frequently asked questions
Why choose mesohepatectomy over a more standard resection?
When a tumor sits in the central liver (segments 4, 5, and 8), a standard extended right or left hepatectomy would remove far more healthy liver than necessary. Mesohepatectomy takes only the central segments and leaves the lateral right (segments 6 and 7) and the lateral left (segments 2 and 3) intact. This is critical for patients with limited liver reserve.
Is this operation more complex than a standard hepatectomy?
Yes. Two parenchymal transection planes are needed instead of one, the middle hepatic vein must be controlled with care, and the bile-duct anatomy is more challenging. This is specialist HPB work that should be done in centers with regular experience in major liver surgery.
Can it be done minimally invasively?
Open surgery is the standard. Selected experienced centers offer laparoscopic or robotic mesohepatectomy in carefully chosen patients. The decision is made on a case-by-case basis after reviewing imaging and anatomy.
What is the recovery like?
Most patients stay 5–7 days in the hospital. Recovery is similar to a major hepatectomy. Most patients return to normal activity in 6–8 weeks. Because lateral segments are preserved, post-hepatectomy liver insufficiency is uncommon.
What are the specific risks?
Bleeding from the middle hepatic vein, bile leak (this is a slightly higher risk than for standard resection because there are two cut surfaces), and the usual major-operation risks. With experienced HPB technique, results are comparable to standard hepatectomy and recovery is often better because so much liver is preserved.