PMID: 32157047Mar 12, 2020Paper

A Case of Extrahepatic Bile Duct Carcinoid Tumor Involving Diagnostic Difficulties

Gan to kagaku ryoho. Cancer & chemotherapy
Nobushige YabeShinji Murai

Abstract

A patient in his 60s had undergone laparoscopic anterior resection for the treatment of carcinoma of the rectum in February 2016. Histopathologic examination revealed the lesion as a pT2(MP)n(-)M0, fStage Ⅰrectal cancer. One year post-surgery, contrast-enhanced computed tomography(CT)revealed enhancement of parts of the intrapancreatic distal bile ducts. Magnetic resonance cholangiopancreatography(MRCP)showed filling defects at the same site. Magnetic resonance imaging( MRI)with an endorectal coil(ERC)was then performed to identify reproducible bile duct filling defects. Neither cytology nor biopsy yielded any findings that definitely indicated malignancy. Intraductal ultrasonography(IDUS)led to the suspicion of a nonepithelial tumor or an enlarged lymph node. Repeated biopsies via ERC were performed based on the absence of evidence of malignancy and revealed the presence of some atypical cells within the lesions. Although no definitive diagnosis could be made, the patient was scheduled for surgery in June 2017 after obtaining his consent. Upon taping of the common bile duct during surgery, a tumor was palpable on the dorsal aspect of the pancreas. The bile duct tumor was completely excised and submitted for intraoperative diag...Continue Reading

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