Abstract
Objective: Brain metastases (BMs) from biliary tract cancer (BTC) are extremely rare. The aim of our study was to report the incidence of BMs in patients with BTC. Methods: We retrospectively analyzed a series of 450 patients with BTC. Presence of brain lesions was investigated only when symptoms were evident. Cumulative incidence, median overall survival (OS) from detection of BMs, median OS from cancer diagnosis, and median time from cancer diagnosis to detection of BMs were evaluated. Results: In our series, 6 patients developed BMs with an incidence of about 1.4%. Median OS from detection of BMs and from cancer diagnosis was, respectively, 3.7 (0.9-17.8) and 23 (9.9-57.6) months. Median time between cancer diagnosis and detection of BMs was 13.6 (7.3-52.8) months. Moreover, we observed a significant association between BMs and bone metastases (particularly vertebral lesions). Discussion: Despite the retrospective design, this is the first study evaluating the incidence of BMs among patients with BTC in Western countries. BMs from BTC remain atypical, although their incidence is probably a little higher than previously assumed. Patients with BMs had poor prognosis. Unpredictably, bone involvement occurred in 5 out of 6 patients.
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