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Cystic lesions and their mimics involving the intrahepatic bile ducts and peribiliary space: diagnosis, complications, and management.
Abdom Radiol (NY)
December 2024
Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO, USA.
Biliary and peribiliary cystic lesions represent a diverse group of abnormalities, often discovered incidentally during imaging for unrelated conditions. These lesions, typically asymptomatic, necessitate precise imaging modalities to characterize their nature and determine subsequent clinical actions, such as follow-up imaging, biopsy, or surgical referral. The anatomic location of these cystic lesions, whether biliary or peribiliary, influences both diagnostic and prognostic outcomes.
View Article and Find Full Text PDFA Pathological Assessment of the Microvasculature of Biliary Tract Neoplasms Referring to Pre-Existing Blood Vessels and Vessel Co-Option.
Cancers (Basel)
November 2024
Division of Pathology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan.
There are several types of microvasculature supplying neoplasms: "newly formed blood vessels" (neoangiogenesis), which are a component of the tumor microenvironment (TME) of invasive carcinoma with wound healing-like reaction; and "pre-existing blood vessels", which are used as tumor-supplying vessels by neoplasms (co-option vessels) and are likely to develop in hypervascularized organs. We herein review the microvasculature of neoplasms of biliary tract with reference to pre-existing vessels and vessel co-options. In the hepatobiliary system, intrahepatic large and extrahepatic bile ducts (large bile ducts) and the gallbladder as well as hepatic lobules are highly vascularized regions.
View Article and Find Full Text PDFImpact of aging on peribiliary glands in ischemia-reperfusion injury.
J Hepatobiliary Pancreat Sci
October 2024
Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kanazawa University Hospital, Kanazawa, Japan.
Article Synopsis
- - The study investigates how aging affects the peribiliary gland's (PBG) response to ischemia-reperfusion injury (IRI) in liver tissue from young and old rats.
- - Results indicate that old rats experienced significant increases in PBG volume and cell proliferation, as well as more mucus production and oxidative stress compared to young rats following IRI.
- - Findings suggest that differences in the PBG's response to injury based on age may contribute to the frequency of ischemia-type biliary lesions (ITBLs) in aged donor grafts.
Pathologic significance of peribiliary capillary plexus in gallbladder neoplasm.
Hum Pathol
April 2024
Division of Pathology, Shizuoka Cancer Center, Shizuoka, Japan.
Aims: Significance of peribiliary capillary plexus (PCP) in gallbladder neoplasms remains unclear. Aims are to characterize high-grade biliary intraepithelial neoplasm (BilIN), pyloric gland adenoma (PGA), and intracholecystic papillary neoplasm (ICPN), precursors of gallbladder carcinoma, and to differentiate invasive carcinoma from pseudo-invasive lesions in gallbladder walls, referring to PCP.
Materials And Methods: High-grade BilIN (38 cases), PGA (5 cases), and ICPN (25 cases) were examined using capillary immunostaining.
COVID-19-associated secondary sclerosing cholangitis with liver transplantation.
Virchows Arch
August 2024
Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
We report on two cases of orthotopic liver transplantation (OLTX) due to SARS-Cov2-associated secondary sclerosing cholangitis (SSC) following long-term artificial respiration and extra-corporal membrane oxygenation in intensive care. Under these conditions, SSC is a rapidly progredient biliary disease featuring degenerative cholangiopathy, loss of bile ducts, ductular and parenchymal cholestasis, biliary fibrosis, and finally cirrhosis. Reduced perfusion and oxygenation of the peribiliary plexus, severe concurrent infections, and secondary medico-toxic effects appear to play a crucial role in the pathogenesis of the disease.
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