@article{oai:nagasaki-u.repo.nii.ac.jp:00020253,
 author = {Asakawa, Takayuki and Terada, Masazumi and Oshibuchi, Hidenobu and Abiru, Hiroyoshi and Matsuo, Takeshi and Kanematsu, Takashi},
 issue = {3-4},
 journal = {Acta medica Nagasakiensia},
 month = {Dec},
 note = {An 85-year-old woman was admitted because of epigastric pain. The endoscopic examination showed the presence of duodenal ulcer. Abdominal ultrasonography and computed tomography revealed a dilatation of the common bile duct, but no apparent stones were seen in the biliary tract including the gall bladder. In addition, endoscopic retrograde cholangiography showed a filling defect, 20x30 mm in size, in the extrahepatic bile duct. The laboratory data and serum tumor makers were within normal limits. Carcinoma of the extrahepatic bile duct was tentatively made. At operation, an exploration using cholangioscopy and ultrasonography failed to reveal any malignancy. She underwent a local excision of the biliary tumor. Histological examination of the resected specimen showed a benign papillary adenoma. This case is herein reported because of rarity of the disease, which was incidentally found., Acta medica Nagasakiensia. 2001, 46(3-4), p.77-79},
 pages = {77--79},
 title = {Large Benign Polyp of the Extrahepatic Bile Duct (Mimicking Bile Duct Cancer)},
 volume = {46},
 year = {2001}
}