Systematic Review and Meta-Analysis of Liver Resection for Colorectal Metastases in Elderly Patients

et al. 2020

Preprint

Background: Few studies have focused on the role of hepatectomy for colorectal liver-limited metastases in elderly patients compared to matched younger patients.Methods: From January 2000 to December 2018, 724 patients underwent hepatectomy for colorectal liver-limited metastases. Based on a 1:2 propensity score matching (PSM) model, 64 elderly patients (≥ 70 years of age) were matched to 128 younger patients (༜70 years of age) to obtain two balanced groups with regards to demographic, therapeutic and prognostic factors.Results: There were 73 elderly and 651 younger patients in the unmatched cohort. Compared with the younger group (YG), the elderly group (EG) had significantly higher proportion of American Society of Anesthesiologists score Ⅲ and comorbidities, and lower proportion of more than 3 liver metastases and postoperative chemotherapy (p < 0.05). After PSM for these factors, rat sarcoma virus proto-oncogene/B-Raf proto-oncogene (RAS/BRAF) mutation status and primary tumor sidedness, the EG had significantly less median intraoperative blood loss than the YG (175 ml vs. 200 ml, p = 0.046), a shorter median postoperative hospital stay (8 days vs. 11 days, p = 0.020) and a higher readmission rate (4.7% vs.0%, p = 0.036). The EG also had longer disease-free survival (DFS), overall survival (OS) and cancer-specific survival (CSS) compared to the YG, but these findings were not statistically significant (p > 0.05). Old age was not an independent factor for DFS, OS and CSS by Cox multivariate regression analysis (p > 0.05).Conclusions: Hepatectomy is safe for colorectal liver-limited metastases in elderly patients, and these patients may subsequently benefit from prolonged DFS, OS and CSS.

Section: Discussionmentioning

confidence: 99%

Liver Resection for Colorectal Liver-limited Metastases in Elderly Patients: A Propensity Score Matching Analysis

et al. 2020

Preprint

“…There are different de nitions in the literature as to the cutoff age for an individual to be designated as elderly [11,[15][16][17][18]20]. However, the most frequently used cutoff age is 70 [15,16,[21][22][23], which was adopted for the EG cutoff in this study. Due to the unmatched demographic and preoperative treatment data between the EG and the YG in this study, a PSM method was used to probe the effect of age on patient outcomes after hepatectomy.…”

Section: Discussionmentioning

confidence: 99%

Liver Resection for Colorectal Liver-limited Metastases in Elderly Patients: A Propensity Score Matching Analysis

et al. 2020

Preprint

Background: Few studies have focused on the role of hepatectomy for colorectal liver-limited metastases in elderly patients compared to matched younger patients. Methods: From January 2000 to December 2018, 724 patients underwent hepatectomy for colorectal liver-limited metastases. Based on a 1:2 propensity score matching (PSM) model, 64 elderly patients (≥70 years of age) were matched to 128 younger patients (＜70 years of age) to obtain two balanced groups with regards to demographic, therapeutic and prognostic factors.Results: There were 73 elderly and 651 younger patients in the unmatched cohort. Compared with the younger group (YG), the elderly group (EG) had significantly higher proportion of American Society of Anesthesiologists score Ⅲ and comorbidities, and lower proportion of more than 3 liver metastases and postoperative chemotherapy (p<0.05). After PSM for these factors, rat sarcoma virus proto-oncogene/B-Raf proto-oncogene (RAS/BRAF) mutation status and primary tumor sidedness, the EG had significantly less median intraoperative blood loss than the YG (175ml vs. 200ml, p=0.046), a shorter median postoperative hospital stay (8 days vs. 11 days, p=0.020) and a higher readmission rate (4.7% vs.0%, p=0.036). The EG also had longer disease-free survival (DFS), overall survival (OS) and cancer-specific survival (CSS) compared to the YG, but these findings were not statistically significant (p>0.05). Old age was not an independent factor for DFS, OS and CSS by Cox multivariate regression analysis (p>0.05). Conclusions: Hepatectomy is safe for colorectal liver-limited metastases in elderly patients, and these patients may subsequently benefit from prolonged DFS, OS and CSS.

“…There are different de nitions in the literature as to the cutoff age for an individual to be designated as elderly [11,[15][16][17][18]20]. However, the most frequently used cutoff age is 70 [15,16,[22][23][24], which was adopted for the EG cutoff in this study. Due to the unmatched demographic and preoperative treatment data between the EG and the YG in this study, a PSM method was used to probe the effect of age on patient outcomes after hepatectomy.…”

Section: Discussionmentioning

confidence: 99%

Liver Resection for Colorectal Liver-limited Metastases in Elderly Patients: A Propensity Score Matching Analysis

et al. 2020

Preprint

Background: Few studies have focused on the role of hepatectomy for colorectal liver-limited metastases in elderly patients compared to matched younger patients.Methods: From January 2000 to December 2018, 724 patients underwent hepatectomy for colorectal liver-limited metastases. Based on a 1:2 propensity score matching (PSM) model, 64 elderly patients (≥70 years of age) were matched to 128 younger patients (＜70 years of age) to obtain two balanced groups with regards to demographic, therapeutic and prognostic factors.Results: There were 73 elderly and 651 younger patients in the unmatched cohort. Compared with the younger group (YG), the elderly group (EG) had significantly higher proportion of American Society of Anesthesiologists score Ⅲ and comorbidities, and lower proportion of more than 3 liver metastases and postoperative chemotherapy (p<0.05). After PSM for these factors, rat sarcoma virus proto-oncogene/B-Raf proto-oncogene (RAS/BRAF) mutation status and primary tumor sidedness, the EG had significantly less median intraoperative blood loss than the YG (175ml vs. 200ml, p=0.046), a shorter median postoperative hospital stay (8 days vs. 11 days, p=0.020) and a higher readmission rate (4.7% vs.0%, p=0.036). The EG also had longer disease-free survival (DFS), overall survival (OS) and cancer-specific survival (CSS) compared to the YG, but these findings were not statistically significant (p>0.05). Old age was not an independent factor for DFS, OS and CSS by Cox multivariate regression analysis (p>0.05).Conclusions: Hepatectomy is safe for colorectal liver-limited metastases in elderly patients, and these patients may subsequently benefit from prolonged DFS, OS and CSS.