BACKGROUND: The prognosis of intrahepatic cholangiocarcinoma (ICC) remains poor despite improvements in treatment and post-operative clinical management. We review our experiences and evaluate our current surgical approaches by comparing patients from two consecutive treatment periods. METHODS: One hundred forty-four patients who underwent hepatectomy for ICC between 1993 and 2014 were divided into groups that received treatment before (n = 65, first period) and after 2006 (n = 79, second period), when new treatment options such as adjuvant chemotherapy and multimodal therapy for recurrence were introduced. Clinicopathological characteristics and survival outcomes were compared between the groups. RESULTS: First-period patients exhibited more advanced tumor characteristics, including larger tumors, higher serum carbohydrate antigen 19-9 levels, and vascular invasion. Median overall survival (OS) durations of the first- and second-period groups were 21.4 and 57.7 months, respectively (p < 0.001); corresponding median disease-free survival (DFS) durations were 12.2 and 16.6 months, respectively (p = 0.027). Multivariate analysis found an independent association of the treatment time period with OS and DFS. Notably, second-period patients with N1 disease achieved a longer OS and DFS (median OS time: 12.4 and 26.0 months, p = 0.0018, and median DFS: 4.7 and 10.7 months p = 0.019, respectively). Among recurrent patients (first, n = 50 and second, n = 44), second-period patients had a significantly longer survival after recurrence (8.0 vs. 22.3 months, p < 0.001). CONCLUSION: ICC patients, particularly those with N1 disease, achieved significant survival improvements that were partly attributable to patient selection, adjuvant chemotherapy, and multimodal treatment after recurrence.
BACKGROUND: The prognosis of intrahepatic cholangiocarcinoma (ICC) remains poor despite improvements in treatment and post-operative clinical management. We review our experiences and evaluate our current surgical approaches by comparing patients from two consecutive treatment periods. METHODS: One hundred forty-four patients who underwent hepatectomy for ICC between 1993 and 2014 were divided into groups that received treatment before (n = 65, first period) and after 2006 (n = 79, second period), when new treatment options such as adjuvant chemotherapy and multimodal therapy for recurrence were introduced. Clinicopathological characteristics and survival outcomes were compared between the groups. RESULTS: First-period patients exhibited more advanced tumor characteristics, including larger tumors, higher serum carbohydrate antigen 19-9 levels, and vascular invasion. Median overall survival (OS) durations of the first- and second-period groups were 21.4 and 57.7 months, respectively (p < 0.001); corresponding median disease-free survival (DFS) durations were 12.2 and 16.6 months, respectively (p = 0.027). Multivariate analysis found an independent association of the treatment time period with OS and DFS. Notably, second-period patients with N1 disease achieved a longer OS and DFS (median OS time: 12.4 and 26.0 months, p = 0.0018, and median DFS: 4.7 and 10.7 months p = 0.019, respectively). Among recurrent patients (first, n = 50 and second, n = 44), second-period patients had a significantly longer survival after recurrence (8.0 vs. 22.3 months, p < 0.001). CONCLUSION: ICC patients, particularly those with N1 disease, achieved significant survival improvements that were partly attributable to patient selection, adjuvant chemotherapy, and multimodal treatment after recurrence.
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