RT Journal Article SR Electronic T1 Effect of Abdominal Aortic Calcification on Recurrence Following Initial Hepatectomy for Colorectal Liver Metastases JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 649 OP 658 DO 10.21873/anticanres.16854 VO 44 IS 2 A1 IMAOKA, KOUKI A1 OHIRA, MASAHIRO A1 SHIMOMURA, MANABU A1 HATTORI, MINORU A1 BEKKI, TOMOAKI A1 SATO, KOKI A1 IMAOKA, YUKI A1 AKABANE, SHINTARO A1 NAKANO, RYOSUKE A1 YANO, TAKUYA A1 SAKAI, HIROSHI A1 HIRATA, FUMIHIRO A1 KURODA, SHINTARO A1 TAHARA, HIROYUKI A1 IDE, KENTARO A1 ISHIYAMA, KOHEI A1 KOBAYASHI, TSUYOSHI A1 TANAKA, YUKA A1 OHDAN, HIDEKI YR 2024 UL http://ar.iiarjournals.org/content/44/2/649.abstract AB Background/Aim: The aim of the study was to analyze the association between abdominal aortic calcification (AAC) and patient prognosis following resection of colorectal liver metastases (CRLM). AAC potentially reflects intrahepatic immunity and is involved in tumor development and progression. However, the clinical effects of AAC on colorectal cancer (CRC) prognosis after curative-intent liver resection for CRLM remain unclear. Patients and Methods: We evaluated the effect of AAC on the clinical prognosis and metastatic patterns in 99 patients who underwent hepatectomy for CRLM between 2010 and 2019. Results: The high-AAC group had significantly worse overall survival (OS) and remnant liver recurrence rate (RR) after propensity score matching to adjust for differences in baseline characteristics of patients and tumors. In multivariate Cox regression analyses, high AAC volume was an independent risk factor for poor OS and liver RR, but not poor lung RR. The expression of tumor necrosis factor-related apoptosis-inducing ligand, known as an anti-tumor marker, in liver natural killer (NK) cells was lower in the high-AAC group than in the low-AAC group. Conclusion: High AAC volume showed a strong relationship with remnant liver RR after curative resection of CRLM. High AAC volume may be responsible for the suppression of anti-tumor activity of liver NK cells, which results in an increased risk of liver recurrence and poor prognosis.