Methods:
A list of 393 patients with a diagnosis of hilar CC was retrieved from the database of Soonchunhyang University Hospital (Seoul, Korea) and these patients were seen from January 1, 2001, to April 1, 2010. We retrospectively reviewed the records of 74 patients who underwent PDT in addition to biliary stenting with/without chemoradiation.

Results:
The median overall survival from the date of diagnosis to death or to the last follow-up was 11.7 months (range: 2.2∼78.4). After performing PDT, a complete remission was observed in 1.3% (1/74) of the patients who had a superficial depth of tumor without lymph node involvement. On multivariate analysis using the Cox regression model, increasing the time to treatment after the diagnosis was a statistically significant predictor of shorter survival after PDT [Odds ratio: 3.25, 95% confidence interval (CI): 1.90∼4.71, p=0.034].