A CASE OF PEDUNCULATED PAPILLARY ADENOMA ARISEN IN THE COMMON BILE DUCT

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  • 総胆管に発生した有茎性のｐａｐｉｌｌａｒｙ　ａｄｅｎｏｍａの１例

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Abstract

A 63–year–old woman undergone endoscopic retrograde cholangiography for dilatation of the common bile duct which was detected by abdominal CT scan was found having dilatation of the common bile duct and a protruding cauliflower–like lesion with the maximum diameter of about 3 cm in it. A possibility of a malignant neoplasm could not be ruled out completely in terms of the tumor diameter, and operation was performed. Following excision of the common bile duct, a part of the tumor was extirpated and examined by intraoperative frozen section diagnosis. It was reported that the obtained material was suggestive of findings of adenoma but a possibility of well–differentiated adenocarcinoma could not be ruled out completely. Accordingly cholecystectomy, choledochectomy, and cholangiojejunostomy were performed after no malignant findings were confirmed at the surgical stumps of the bile duct. The histopathological diagnosis was papillary adenoma, and there were no malignant findings. <BR>Benign tumorous diseases arisen in the extrahepatic bile duct can recur even they are benign, so that we must consider surgical treatment if we can not determine whether such a lesion is benign or malignant.

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