Peribiliary Gland Hyperplasia That Required Differentiation from Extrahepatic Bile Duct Cancer: A Case Report

Abstract Introduction: The peribiliary gland is an accessory bile duct gland. Hyperplasia of these tissues may lead to elevation of the mucosa in the bile ducts and bile duct stenosis. We herein report a case of peribiliary gland hyperplasia that required preoperative differentiation from bile duct...

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Bibliographic Details
Published in:Case reports in gastroenterology 2024-05, Vol.18 (1), p.279-285
Main Authors: Takami, Kazuhiro, Yamamoto, Kuniharu, Sakurai, Hiroto, Sato, Yoshihiro, Kondo, Noriko, Nakano, Toru, Tsujinaka, Shingo, Koiwai, Akinobu, Hirota, Morihisa, Murakami, Keigo, Murakami, Kazuhiro, Shibata, Chikashi, Katayose, Yu
Format: Article
Language:English
Subjects:
bile duct cancer
Bile ducts
Biopsy
Cancer
Case reports
Cellular biology
Cholangiocarcinoma
Colon
Disease
Endoscopy
Gallbladder
Gallbladder diseases
Hyperplasia
Inflammation
Lymphatic system
Metastasis
peribiliary gland
Phlebitis
Single Case
Stem cells
Tissue engineering
Tomography
Tumors
Ultrasonic imaging
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Summary:Abstract Introduction: The peribiliary gland is an accessory bile duct gland. Hyperplasia of these tissues may lead to elevation of the mucosa in the bile ducts and bile duct stenosis. We herein report a case of peribiliary gland hyperplasia that required preoperative differentiation from bile duct cancer, with a discussion of the literature. Case Presentation: The patient had an adenomatous lesion in the ascending colon that was difficult to treat endoscopically; therefore, surgery was planned. Preoperative abdominal ultrasonography revealed a bile duct tumor, and endoscopic ultrasonography revealed a mass lesion around the confluence of the cystic duct. Computed tomography revealed localized wall thickening in the middle bile duct, and the upstream bile ducts were slightly dilated. In addition, continuous thickening of the bile duct wall from the gallbladder to the confluence of the cystic duct was observed. No distant metastases, such as liver metastases, or nearby enlarged lymph nodes were observed. Endoscopic retrograde cholangiopancreatography and magnetic resonance cholangiopancreatography revealed a papillary-like elevated lesion in the bile duct near the confluence of the cystic duct, and a biopsy and bile cytology from the same area showed no malignant findings. As a result, the possibility that the patient had gallbladder or bile duct cancer could not be ruled out; therefore, a policy of surgery together with the ascending colon tumor was decided after receiving sufficient informed consent. During surgery, the patient underwent extrahepatic bile duct resection, reconstruction of the biliary tract using the Roux-en-Y method, and right hemicolectomy. Both duodenal and hilar bile duct transects were subjected to a fast frozen section analysis during surgery, and the results were negative for cancer. A histopathological examination of the resected specimen revealed no malignant findings in the bile duct lesions, and a diagnosis of peribiliary gland hyperplasia with chronic inflammatory cell infiltration and fibrosis of the extrahepatic bile duct wall was made. Conclusions: We encountered a case of peribiliary gland hyperplasia that was difficult to distinguish from bile duct cancer.
ISSN:1662-0631
1662-0631
DOI:10.1159/000538491