Abstract
Background
Although patients with resectable colorectal liver metastasis (CLM), a population with good prognosis, have been treated with upfront surgery, some patients have had a poor prognosis. This study aimed to investigate biologic prognostic factors in patients with resectable CLMs.
Methods
This single-center retrospective study enrolled consecutive patients who underwent liver resection for initial CLMs at the Cancer Institute Hospital between 2010 and 2020. The study defined CLMs as resectable (tumor size < 5 cm; < 4 tumors; no extrahepatic metastasis) or borderline resectable (BR). Preoperative chemotherapy was administered to patients with BR CLMs.
Results
During the study period, 309 CLMs were classified as resectable without preoperative chemotherapy and 345 as BR with preoperative chemotherapy. For the 309 patients with resectable CLMs, the independent poor prognostic factors associated with overall survival in the multivariable analysis were high tumor marker levels (CEA ≥ 25 ng/mL and/or CA19-9 ≥ 50 U/mL; (hazard ratio [HR], 2.45; p = 0.0007), no adjuvant chemotherapy (HR, 1.69; p = 0.043), and age of 75 years or older (HR, 2.09; p = 0.012). The 5-year survival rates for the patients with high tumor marker (TM) levels (CEA ≥25 ng/mL and/or CA19-9 ≥50 U/mL) were significantly worse than for those with low TM levels (CEA < 25 ng/mL and CA19-9 < 50 U/mL) (55.3% vs. 81.1%; p <0.0001) and similar to the rate for those with BR CLMs (52.1%; p = 0.864). Postoperative adjuvant chemotherapy had an impact on prognosis only in the high-TM group (HR, 2.65; p = 0.007).
Conclusions
High TM levels have a prognostic impact on patients with resectable CLMs stratified by tumor number and size. Perioperative chemotherapy improves long-term outcomes for patients with CLM and high TM levels.
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10434_2023_13781_MOESM3_ESM.jpg
Longterm outcomes of resectable colorectal liver metastases. The 3year and 5 year overall survival, time to surgical failure, and recurrence free survival were 82.9% and 73.9%, 68.5%and 64.8%, and 52.3% and 48.9% respectively. (JPG 186 kb)
10434_2023_13781_MOESM4_ESM.jpg
Overall survival in high and low tumor marker groups of resectable colorectal livermetastases and borderline resectable colorectal liver metastases. The 5year overall survival in patients with resectable colorectal liver metastases with high tumor marker levels(55.3%) was similar to those with borderline resectable colorectal liver metastases (52.1%) (p = 0.864) (JPG 326 kb)
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Kobayashi, K., Ono, Y., Kitano, Y. et al. Prognostic Impact of Tumor Markers (CEA and CA19-9) on Patients with Resectable Colorectal Liver Metastases Stratified by Tumor Number and Size: Potentially Valuable Biologic Markers for Preoperative Treatment. Ann Surg Oncol 30, 7338–7347 (2023). https://doi.org/10.1245/s10434-023-13781-0
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DOI: https://doi.org/10.1245/s10434-023-13781-0