Characterization of intraductal papillary neoplasm of bile duct with respect to histopathologic similarities to pancreatic intraductal papillary mucinous neoplasm
| Autor: | Yasuni Nakanuma, Yusuke Yamamoto, Yuki Fukumura, Katsuhiko Uesaka, Masaru Takase, Yasunori Sato, Takashi Miyata, Kenichi Harada, Yuko Kakuda, Motoko Sasaki |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Pathology endocrine system diseases Bile Duct Neoplasm Group A Gastroenterology Pathology and Forensic Medicine 03 medical and health sciences 0302 clinical medicine Internal medicine Biomarkers Tumor medicine Humans Intraductal Papillary Neoplasm Aged Intraductal papillary mucinous neoplasm Bile duct business.industry Papillary tumor Middle Aged medicine.disease Adenocarcinoma Mucinous Immunohistochemistry Adenocarcinoma Papillary Bile Ducts Intrahepatic medicine.anatomical_structure Bile Duct Neoplasms 030220 oncology & carcinogenesis Female 030211 gastroenterology & hepatology Pancreas business Carcinoma Pancreatic Ductal |
| Zdroj: | Human Pathology. 51:103-113 |
| ISSN: | 0046-8177 |
| DOI: | 10.1016/j.humpath.2015.12.022 |
| Popis: | Intraductal papillary neoplasm of bile duct (IPNB) is a papillary tumor covered by well-differentiated neoplastic epithelium with fine fibrovascular cores in the dilated bile ducts. It reportedly shows similarities to intraductal papillary mucinous neoplasm of pancreas (IPMN), to various degrees. Herein, IPNB was pathologically analyzed by classifying 52 cases into 4 groups based on the histopathologic similarities to IPMN: group A (identical to IPMN, 19 cases), group B (similar to but slightly different from IPMN, 18 cases), group C (vaguely similar to IPMN, 5 cases), and group D (different from IPMN, 10 cases). In group A, intrahepatic and perihilar regions were mainly affected, most cases were of low/intermediate or high grade without invasion, and gastric type was the most common phenotype, followed by oncocytic and intestinal types. In groups C and D, perihilar and distal bile ducts were affected, almost all cases were of high grade with invasion, and most of them were of intestinal and pancreatobiliary phenotypes. Most group B cases were of intestinal phenotype, and all were of high grade with or without invasion. In conclusion, these 4 groups of IPNB showed unique pathologic features and behaviors. Group A cases were less aggressive and shared many features with IPMN, whereas group C and D cases were more aggressive and mainly found in perihilar and distal bile ducts. Group B resembling IPMN was intermediate between them. This classification may be useful in clinical practice and holds promise for a novel approach to analyze IPNB tumorigenesis. |
| Databáze: | OpenAIRE |
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