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NATURAL HISTORY OF MEDULLARY THYROID CARCINOMA IN MEN-2 PATIENTS CARRYING A VARIANT AT CODON 804 IN THE RET PROTO-ONCOGENE: A STUDY BY THE FRENCH NEUROENDOCRINE TUMOR GROUP (GTE).
Ann Endocrinol (Paris)
January 2025
CHU Angers, Service d'Endocrinologie-Diabétologie-Nutrition, Angers, 49100, France. Electronic address:
Background: RET variants affecting codon 804 are part of the low-to-moderate risk group in the ATA classification, with indications for prophylactic thyroidectomy beyond age of 5 years. However, aggressiveness seems to be variable. The objective of this study was to report a large cohort of French carriers of a pathogenic variant at codon 804 in the RET proto-oncogene.
View Article and Find Full Text PDFCan ACR TI-RADS predict the malignant risk of medullary thyroid cancer?
J Clin Transl Endocrinol
March 2025
Department of Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, PR China.
Objectives: This study aimed to evaluate the diagnostic performance for medullary thyroid cancer (MTC) based on the 2017 Thyroid Imaging Reporting and Data System by the American College of Radiology (ACR TI-RADS) guideline, and the ability to recommend fine needle aspiration (FNA) for MTC.
Methods: Fifty-six MTCs were included, and 168 benign thyroid nodules (BTNs) and 168 papillary thyroid nodules (PTCs) were matched according to age. Ultrasound (US) features were reviewed according to ACR TI-RADS.
Afferent Projections to the Calca/CGRP-Expressing Parabrachial Neurons in Mice.
J Comp Neurol
January 2025
Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.
The parabrachial nucleus (PB), located in the dorsolateral pons, contains primarily glutamatergic neurons that regulate responses to a variety of interoceptive and cutaneous sensory signals. One lateral PB subpopulation expresses the Calca gene, which codes for the neuropeptide calcitonin gene-related peptide (CGRP). These PB neurons relay signals related to threatening stimuli such as hypercarbia, pain, and nausea, yet their inputs and their neurochemical identity are only partially understood.
View Article and Find Full Text PDFHigh Sensitivity of Fine-Needle Aspiration Calcitonin in Detecting Medullary Thyroid Carcinoma Is Independent of Predefined Decisional Thresholds.
Diagn Cytopathol
January 2025
Servizio di Endocrinologia e Diabetologia, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland.
The measurement of Calcitonin (Ctn) in fine-needle aspiration (FNA) washout fluids (FNA-Ctn) has demonstrated excellent sensitivity, significantly higher than FNA cytology, in detecting medullary thyroid carcinoma (MTC). However, the absence of a fixed cutoff value for FNA-Ctn poses a limitation. This study aimed to investigate whether the sensitivity of FNA-Ctn in detecting MTC varies with different cutoffs reported in the literature.
View Article and Find Full Text PDFApplication of 99mTc-FAPI-46 Imaging in a Patient With Medullary Thyroid Carcinoma: Navigating the Landscape of Novel Radiotracers.
Clin Nucl Med
December 2024
From the Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
We present the case of a 58-year-old man with metastatic medullary thyroid carcinoma refractory to conventional therapies, including peptide receptor radionuclide therapy. Despite multiple interventions, serum calcitonin and carcinoembryonic antigen levels continued to rise. Subsequent evaluation with 99mTc-FAPI-46 revealed remarkable uptake in metastatic lesions, suggesting a potential role for FAPI-labeled radioisotopes in the management of medullary thyroid carcinoma.
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