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The American Joint Committee on Cancer (AJCC) staging system for all cancer sites, including gastroenteropancreatic neuroendocrine tumors (GEP-NETs), is meant to be dynamic, requiring periodic updates to optimize AJCC staging definitions. This entails the collaboration of experts charged with evaluating new evidence that supports changes to each staging system. GEP-NETs are the second most prevalent neoplasm of gastrointestinal origin after colorectal cancer. Since publication of the AJCC eighth edition, the World Health Organization has updated the classification and separates grade 3 GEP-NETs from poorly differentiated neuroendocrine carcinoma. In addition, because of major advancements in diagnostic and therapeutic technologies for GEP-NETs, AJCC version 9 advocates against the use of serum chromogranin A for the diagnosis and monitoring of GEP-NETs. Furthermore, AJCC version 9 recognizes the increasing role of endoscopy and endoscopic resection in the diagnosis and management of NETs, particularly in the stomach, duodenum, and colorectum. Finally, T1NXM0 has been added to stage I in these disease sites as well as in the appendix.
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http://dx.doi.org/10.3322/caac.21840 | DOI Listing |
J Pathol Transl Med
September 2025
Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Background: This study aimed to reclassify a subset of poorly differentiated salivary gland carcinoma that do not conform to any entities of the current World Health Organization (WHO) classification into the category of undifferentiated carcinoma (UDC) because they lack specific histologic differentiation or immunophenotype.
Methods: Cases of salivary gland carcinomas from Asan Medical Center (2002-2020) that did not fit any existing WHO classification criteria and were diagnosed as poorly differentiated carcinoma, high-grade carcinoma, or UDC, were retrospectively reviewed. Immunohistochemical (IHC) staining for p40, neuroendocrine markers, androgen receptor (AR), and gross cystic disease fluid protein 15 (GCDFP-15) and Epstein-Barr virus (EBV) in situ hybridization (ISH) were performed.
Rev Esp Med Nucl Imagen Mol (Engl Ed)
September 2025
Hospital Universitario Reina Sofía, IMIBIC, Universidad de Córdoba, Córdoba, Spain.
The use of theragnostics in nuclear medicine has significantly advanced, particularly peptide receptor radionuclide therapy (PRRT) in neuroendocrine tumors. Meningiomas often overexpress somatostatin receptors (SSTR), making them potential candidates for PRRT. However, the lack of large-scale standardized trials limits its clinical application.
View Article and Find Full Text PDFPituitary
September 2025
Facoltà Di Medicina E Chirurgia, Università Cattolica del Sacro Cuore, Rome, Italy.
Introduction: Pituitary adenomas (PAs) are generally benign neoplasms, though in rare cases may exhibit aggressive behavior. In 2024, the PANOMEN-3 workshop released a new clinical-pathological classification. The objective of this study was to examine the potential of the PANOMEN-3 classification to predict prognosis of PAs and guide treatment in our single center cohort of patients with PAs.
View Article and Find Full Text PDFCan J Ophthalmol
September 2025
University of British Columbia, Department of Ophthalmology and Visual Sciences, Vancouver, BC, Canada.
Objective: To assess the effect of belzutifan, a first-in-class oral hypoxia-inducible factor 2α inhibitor, on retinal hemangioblastoma (RH) outcomes.
Subjects/methods: This is a single-centre retrospective cohort study of patients with confirmed von Hippel-Lindau syndrome (VHLS) and RH. Subjects were taking oral belzutifan for renal cell carcinoma, central nervous system hemangioblastoma, or pancreatic neuroendocrine tumours.
Am J Case Rep
September 2025
Department of Hematology Oncology, University of Illinois, Chicago, IL, USA.
BACKGROUND Treatment of metastatic vasoactive intestinal peptide tumors (VIPoma) is challenging and requires a careful multidisciplinary approach to achieve optimal disease control. We present a case of metastatic VIPoma with recurring episodes of life-threatening diarrhea necessitating multiple intensive care unit (ICU) admissions. CASE REPORT A 54-year-old man presented with severe watery diarrhea and metabolic acidosis with MRI showing a necrotic pancreatic body mass, and multiple liver lesions.
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