Ventral approach for resecting hepatocellular carcinoma in the caval portion of the caudate lobe

Survival outcomes after caudate lobectomy for hepatocellular carcinoma: systematic review and meta-analysis

BACKGROUND

Caudate lobectomy (CLB) remains the most effective treatment for caudate lobe hepatocellular carcinoma (CL-HCC). However, there is controversy regarding the survival after CLB. This meta-analysis aims to investigate the survival outcomes following CLB for the treatment of CL-HCC.

METHODS

In line with PRISMA and MOOSE guidelines, a search for all eligible studies was performed. The pooled estimates of survival rates and hazard ratios (HRs) with their 95% confidence intervals (CIs) were calculated using fixed- or random-effects models.

RESULTS

Sixteen studies comprising 864 patients met the inclusion criteria. The pooled estimates of 3- and 5-year overall survival (OS) rates were 62.3% and 42.9% respectively and the pooled estimate of 3- and 5-year recurrence-free survival (RFS) rates were 39.3% and 24.4% respectively. CL-HCC showed inferior OS (HR:1.39, 95% CI: 0.91-1.88, P < 0.001) and RFS (HR:1.33, 95% CI: 1.10-1.56, P < 0.001) than other sites HCC. Isolated CLB showed better OS (HR:0.9, 95% CI:0.39-1.41, p < 0.001) and RFS (HR:0.76, 95% CI: 0.03-1.5, P = 0.04) than combined CLB.

CONCLUSIONS

The survival outcomes for CL-HCC after CLB are lower compared to other sites HCC. Isolated CLB offers better survival outcomes compared to combined CLB. However, choosing isolated or combined approaches should be prioritized according to patient and tumour characteristics.

The value of total caudate lobe resection for hilar cholangiocarcinoma: a systematic review

Hilar cholangiocarcinoma (HCCA) is widely considered to have a poor prognosis. In particular, combined caudate lobe resection (CLR) as a strategy for radical resection in HCCA is important for improving the R0 resection rate. However, the criteria for R0 resection, necessity of CLR, optimal extent of hepatic resection, and surgical approach are still controversial. This review aimed to summarize the findings and discuss the controversies surrounding CLR. Numerous clinical studies have shown that combined CLR treatment for HCCA improves the R0 resection rate and postoperative survival time. Whether surgery for Bismuth type I or II is combined with CLR depends on the pathological type. Considering the anatomical factors, total rather than partial CLR is recommended to achieve a higher R0 resection rate. In the resection of HCCA, a proximal ductal margin greater than or equal to 10 mm should be achieved to obtain a survival benefit. Although there is no obvious boundary between the right side (especially the paracaval portion) and the right posterior lobe of the liver, Peng's resection line can serve as a reference marker for right-sided resection. Laparoscopic resection of the caudate lobe may be safer, more convenient, accurate, and minimally invasive than open surgery, but it needs to be completed by experienced laparoscopic doctors.

Validity of the Algorithm for Liver Resection of Hepatocellular Carcinoma in the Caudate Lobe

BACKGROUND

We aimed to validate our algorithm for resecting Hepatocellular carcinoma (HCC) in the caudate lobe based on tumor location, tumor size, and indocyanine green clearance rate.

METHODS

Patients who underwent curative resections for solitary HCC in the caudate lobe were included. The surgical outcomes of patients with HCC in the caudate lobe were compared with those of patients with HCC in other sites of the liver.

RESULTS

After one-to-one matching, the caudate-lobe group (n = 150) had longer operation time, greater amount of bleeding, lower weight of resected specimens, and shorter distance between tumor and resection line than the other-sites group (n = 150), but the complication rates were not different between the groups (38.0% vs. 34.1%, P = 0.719). After a median follow-up period of 3.0 years (range, 0.3-16.2 years), the median overall survivals were 6.5 (95% confidence interval [CI], 5.3-7.9) and 7.5 years (95% CI, 6.3-9.7) in the caudate-lobe and other-site groups, respectively (P = 0.430). Median recurrence-free survivals in the caudate-lobe group (1.9 years; 95% CI, 1.4-2.7) had a tendency to be shorter than those in the other-sites group (2.3 years; 1.7-3.4) (P = 0.052).

CONCLUSIONS

Patients' survival and complication rates in the caudate-lobe group were comparable to those in the other-sites group; therefore, our algorithm for resecting HCC in the caudate lobe is of clinical use.

Surgical Strategy for Resecting Hepatocellular Carcinoma in the Caudate Lobe: Isolated or Combined Lobectomy? A Single-Center Study and Meta-Analysis

Background

Resection of hepatocellular carcinoma (HCC) originating in the caudate lobe remains challenging, while the optimal extent of resection is debated. We aimed to evaluate the relative benefits of combined caudate lobectomy (CCL) versus isolated caudate lobectomy (ICL) for caudate HCC.

Methods

Patients who underwent curative-intent resection for caudate HCC between January 2010 and December 2018 were identified from a single-center database. Surgical outcomes of the two strategy groups were analyzed before and after propensity score matching. A systematic review with meta-analysis was also performed to compare outcomes of CCL versus ICL for caudate HCC.

Results

A total of 28 patients were included: 11 in the CCL and 17 in the ICL group. Compared with ICL, the CCL group contained patients with larger tumors and a higher incidence of vascular invasion. After propensity score matching, 6 pairs of patients were selected. In the well-matched cohort, CCL demonstrated significantly improved recurrence-free survival (RFS) (P = 0.047) compared with ICL; no significant differences were noted for overall survival (OS), operation time, blood loss and morbidity rate. A total of 227 patients from nine eligible studies and ours were involved in the systematic review. Meta-analysis revealed that CCL provided better RFS (hazard ratio 0.54, 95% confidence interval 0.31–0.92) than ICL; no significant differences were observed in OS, operation time, blood loss and morbidity rate.

Conclusion

CCL confers superior RFS over ICL without compromise of perioperative outcomes and should be prioritized for patients with caudate HCC when feasible, especially for those with large-sized tumors.

Algorithm for Resecting Hepatocellular Carcinoma in the Caudate Lobe

OBJECTIVE

To propose an algorithm for resecting hepatocellular carcinoma (HCC) in the caudate lobe.

BACKGROUND

Owing to a deep location, resection of HCC originating in the caudate lobe is challenging, but a plausible guideline enabling safe, curable resection remains unknown.

METHODS

We developed an algorithm based on sublocation or size of the tumor and liver function to guide the optimal procedure for resecting HCC in the caudate lobe, consisting of 3 portions (Spiegel, process, and caval). Partial resection was prioritized to remove Spiegel or process HCC, while total resection was aimed to remove caval HCC depending on liver function.

RESULTS

According to the algorithm, we performed total (n = 43) or partial (n = 158) resections of the caudate lobe for HCC in 174 of 201 patients (compliance rate, 86.6%), with a median blood loss of 400 (10-4530) mL. Postoperative morbidity (Clavien grade ≥III b) and mortality rates were 3.0% and 0%, respectively. After a median follow-up of 2.6 years (range, 0.5-14.3), the 5-year overall and recurrence-free survival rates were 57.3% and 15.3%, respectively. Total and partial resection showed no significant difference in overall survival (71.2% vs 54.0% at 5 yr; P = 0.213), but a significant factor in survival was surgical margin (58.0% vs 45.6%, P = 0.034). The major determinant for survival was vascular invasion (hazard ratio 1.7, 95% CI 1.0-3.1, P = 0.026).

CONCLUSIONS

Our algorithm-oriented strategy is appropriate for the resection of HCC originating in the caudate lobe because of the acceptable surgical safety and curability.

The Clinical Efficacy of Surgical Removal of Hepatocellular Carcinoma in Caudate Lobe in the Chinese Population: A Case-control Study

Our aims were to compare the therapeutic efficacy of surgical resection of caudate lobe hepatocellular carcinoma and noncaudal lobe hepatocellular carcinoma in the Chinese population. The study group consisted of 220 patients undergoing caudate lobe hepatectomy during the period spanning from January 2003 to November 2017, and 220 patients with caudate lobe hepatectomy were selected as the control group. There were 142 cases (64.5%) of surgical margin of R0 in patients with caudate lobe liver cancer, and 178 cases (80.9%) of surgical margins in patients with noncaudal lobe liver cancer, and the difference was statistically significant (P<0.01) between the 2 groups. Compared with noncaudal lobe liver cancer patients, caudate lobe liver cancer patients had significantly longer operation time (186.65±81.36 vs. 118.85±69.23, P<0.01), longer vessel block time (29.93±11.96 vs. 22.76±10.74, P<0.01), more intraoperative blood loss (709.73±108.39 vs. 329.74±85.76, P<0.01), and there was no significant difference in the incidence of complications (53.4% vs. 46.6%, P>0.05). Significantly different therapeutic efficacy was found between the caudate lobe hepatocellular carcinoma group and the noncaudal lobe hepatocellular carcinoma group, which may be due to the lack of resection margin of caudate-leaf liver cancer surgery and more intraoperative bleeding.

High dorsal resection for hepatocellular carcinoma: surgical plane and outcomes

High dorsal resection (HDR) of the liver is a systematic resection technique for hepatocellular carcinoma (HCC) arising in the caudate lobe. HDR is rarely performed, as the procedure requires a high level of operative skill, knowledge of liver anatomy and is performed in patients with limited hepatic function. Between 2002 and 2012, we performed HDR on 9 patients. The median operation time was 534 min (range, 349-903 min), and the median blood loss volume was 430 mL (range, 94-4,530 mL). The severe morbidity rate was 11.1%, but there was no operative mortality, and the median hospitalization was 13 days (range, 8-93 days). The overall survival was 49.7 months (range, 3.1-89.0 months). Despite the hard-to-approach anatomic location, HDR can be carried out safely with good survival compared to other segments.