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EVALUATION STUDY
JOURNAL ARTICLE
Potential role of peroral cholangioscopy for preoperative diagnosis of cholangiocarcinoma.
BACKGROUND/PURPOSE: We evaluated the utility of peroral cholangioscopy (POCS) for preoperative diagnosis of cholangiocarcinoma.
METHODS: POCS was performed to assess the horizontal extension of the carcinoma. We compared the results of assessment with those of histologic analysis of 44 surgically resected specimens.
RESULTS: Cholangiocarcinoma types were described as filling defects and strictures in 16 and 28 patients, respectively, using cholangiography. Endoscopic retrograde cholangiography (ERC) identified tumor extension in 5 and 15 patients with filling defects (31.25%) and strictures (53.57%), respectively. ERC+POCS identified tumor extension in 15 and 16 patients with filling defects (93.75%) and strictures (60.71%), respectively. ERC+POCS was significantly useful for patients with filling defects compared with ERC alone (P=0.002). ERC+POCS was not significantly useful for patients with strictures compared with ERC alone.
CONCLUSIONS: POCS is a useful preoperative examination modality for assessing tumor extension in cholangiocarcinoma patients, especially in those with filling defects.
METHODS: POCS was performed to assess the horizontal extension of the carcinoma. We compared the results of assessment with those of histologic analysis of 44 surgically resected specimens.
RESULTS: Cholangiocarcinoma types were described as filling defects and strictures in 16 and 28 patients, respectively, using cholangiography. Endoscopic retrograde cholangiography (ERC) identified tumor extension in 5 and 15 patients with filling defects (31.25%) and strictures (53.57%), respectively. ERC+POCS identified tumor extension in 15 and 16 patients with filling defects (93.75%) and strictures (60.71%), respectively. ERC+POCS was significantly useful for patients with filling defects compared with ERC alone (P=0.002). ERC+POCS was not significantly useful for patients with strictures compared with ERC alone.
CONCLUSIONS: POCS is a useful preoperative examination modality for assessing tumor extension in cholangiocarcinoma patients, especially in those with filling defects.
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