An international registry on liver venous deprivation (LVD, simultaneous portal and hepatic vein embolization) was created in 2020. This study assessed the outcomes after LVD in patients included in the registry.
Eight international centers participated. Future liver remnant (FLR) and standardized FLR ratios were defined as FLR/total functional liver volume and FLR/total estimated liver volume.
216 patients were included (80 women, median age 63). Main surgical indication was colorectal metastases (n=124). Median and standardized FLR ratios before LVD were 33% (IQR27-47) and 32% (IQR24-39). In one patient, right hepatic vein embolization failed. Complications after LVD occurred in 14 patients (6.5%). After LVD, median and standardized FLR ratios significantly increased to 46% (IQR38-60, p<0.001) and 44% (IQR35-51, p<0.001), corresponding to a median kinetic growth rate of 3.4%/week (IQR1.5-6.0). Hepatectomy was performed in 160 patients (72 extended hepatectomies), while 56 dropped out (4% insufficient hypertrophy, 13% tumor progression). Seventy-seven patients had postoperative complications (48%; 5 postoperative liver failures, 3%). Median Comprehensive Complication Index was 20.9 (IQR0-30.8).
Preliminary data of this international registry showed that LVD had a high technical success rate with few post-procedural complications and significant kinetic growth. Major hepatectomy after LVD appeared to be safe.