Intrahepatic gallbladder must be distinguished from other lesions which also produce an area of decreased tracer concentration on liver scan. Identification is imperative because it determines therapy. A scan performed with rose bengal labeled with iodine 131 was used in this case.
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The importance of preclinical models for cholangiocarcinoma drug discovery.
Expert Opin Drug Discov
January 2025
Center of Physiology, Pathophysiology and Biophysics, Institute of Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria.
Introduction: Biliary tract cancer (BTC) comprises a clinically diverse and genetically heterogeneous group of tumors along the intra- and extrahepatic biliary system (intrahepatic and extrahepatic cholangiocarcinoma) and gallbladder cancer with the common feature of a poor prognosis, despite increasing molecular knowledge of associated genetic aberrations and possible targeted therapies. Therefore, the search for even more precise and individualized therapies is ongoing and preclinical tumor models are central to the development of such new approaches.
Areas Covered: The models described in the current review include simple and advanced in vitro and in vivo models, including cell lines, 2D monolayer, spheroid and organoid cultures, 3D bioprinting, patient-derived xenografts, and more recently, machine-perfusion platform-based models of resected liver specimens.
Genomic and transcriptomic signatures of sequential carcinogenesis from papillary neoplasm to biliary tract cancer.
J Hepatol
January 2025
Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea. Electronic address:
Background & Aims: Papillary neoplasms of the biliary tree, including intraductal papillary neoplasms (IPN) and intracholecystic papillary neoplasms (ICPN), are recognized as precancerous lesions. However, the genetic characteristics underlying sequential carcinogenesis remain unclear.
Methods: Whole-exome sequencing was performed on 166 neoplasms (33 intrahepatic IPNs, 44 extrahepatic IPNs, and 89 ICPNs), and 41 associated carcinomas.
Morphologic and immunohistochemical characterization of small and large duct cholangiocarcinomas in a Western cohort: A panel of pCEA, CRP, N-cadherin, and albumin in situ hybridization aids in subclassification.
Ann Diagn Pathol
January 2025
University of California Davis School of Medicine, Department of Pathology and Laboratory Medicine, 4400 V Street, Sacramento, CA 95817, USA. Electronic address:
Two morphologic subtypes of intrahepatic cholangiocarcinoma (iCCA), small duct and large duct, are now recognized, and importantly, these subtypes are associated with distinct molecular pathways and therapeutic options. Initial studies demonstrated the feasibility of morphologic subclassification and helped characterize the immunoprofile of the subtypes. However, few studies have been undertaken in Western countries where incidence of the subtypes is likely distinct from that in the East.
View Article and Find Full Text PDFGenomic Profiling of Biliary Tract Cancers: Comprehensive Assessment of Anatomic and Geographic Heterogeneity, Co-Alterations and Outcomes.
J Surg Oncol
January 2025
Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA.
Background: Biliary tract cancers (BTCs) represent distinct biological and genomic entities. Anatomic and geographic heterogeneity in genomic profiling of BTC subtypes, genomic co-alterations, and their impact on long-term outcomes are not well defined.
Methods: Genomic data to characterize alterations among patients with BTCs were derived from the AACR GENIE registry (v15.
Clinicopathologic and genomic characteristics of biliary tract carcinomas with TERT promoter mutations among East Asian population.
Pathol Res Pract
December 2024
Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea; Center for Companion Diagnostics, Precision Medicine Research Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. Electronic address:
Telomerase reverse transcriptase gene promoter (TERT) mutations are biomarkers that predict survival and responses to immune checkpoint inhibitors in various malignancies. However, their prevalence and clinicopathologic characteristics in biliary tract carcinomas are largely unknown. We performed a comprehensive genomic profiling of formalin-fixed paraffin-embedded tumor tissue from 485 carcinomas, including intrahepatic (n = 220), perihilar (n = 54), distal biliary tract (n = 110), and gallbladder (n = 101) cancers, using next-generation sequencing.
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