title: A case of gallbladder carcinoma diagnosed preoperatively by the detection of human telomerase reverse transcriptase mRNA in endoscopically obtained gallbladder bile.
abstract: It is difficult to accurately diagnose the nature of polypoid lesions in the gallbladder. To increase diagnostic accuracy, we have developed an endoscopic technique for obtaining gallbladder bile, termed endoscopic transpapillary catheterization into the gallbladder (ETCG). We describe here a case of gallbladder carcinoma diagnosed preoperatively by the detection of human telomerase reverse transcriptase (hTERT) mRNA, a catalytic subunit of telomerase, in gallbladder bile obtained using the ETCG technique. A patient with a polypoid lesion 15 mm in diameter in the gallbladder was admitted to our hospital for further examinations. Gallbladder bile collected by the ETCG technique was evaluated cytologically and also analyzed for telomerase activity and hTERT mRNA. Although the results for cytology and telomerase activity were negative, that for hTERT mRNA was positive. Open surgery was carried out and it was confirmed that the lesion was an adenocarcinoma invading the subserosa. The molecular biological analysis of gallbladder bile collected using the ETCG technique was shown to be effective for diagnosing the nature of the polypoid lesion in the gallbladder.
authors.affiliation: Third Department of Internal Medicine, Kagawa Medical University, Kagawa, Japan. naohito@kms.ac.jp
authors.forename: N
authors.initials: N
authors.lastname: Uchida
authors.forename: K
authors.initials: K
authors.lastname: Tsutsui
authors.forename: H
authors.initials: H
authors.lastname: Kobara
authors.forename: T
authors.initials: T
authors.lastname: Ezaki
authors.forename: H
authors.initials: H
authors.lastname: Fukuma
authors.forename: M
authors.initials: M
authors.lastname: Yachida
authors.forename: T
authors.initials: T
authors.lastname: Masaki
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Nakatsu
authors.forename: H
authors.initials: H
authors.lastname: Nakano
authors.forename: S
authors.initials: S
authors.lastname: Kuriyama
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000601:surgery; D000368:Aged; D001646:Bile / Q000378:metabolism*; D014408:Biomarkers, Tumor / Q000378:metabolism*; D002404:Catheterization / Q000379:methods; D002763:Cholecystectomy; D004268:DNA-Binding Proteins; D016145:Endoscopy, Digestive System; D005260:Female; D005704:Gallbladder / Q000473:pathology; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D011300:Preoperative Care; D012333:RNA, Messenger / Q000032:analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D019098:Telomerase / Q000378:metabolism*
chemical_list: D014408:Biomarkers, Tumor; D004268:DNA-Binding Proteins; D012333:RNA, Messenger; D019098:Telomerase