We present two siblings with neonatal Hirschsprung's disease in whom isolated familial medullary carcinoma of the thyroid was diagnosed at the age of 16 and 19 years. Rectal biopsy in each patient revealed total absence of ganglion cells in the myenteric plexus and hypertrophied nerve fibers characteristic of Hirschsprung's disease. Both underwent total thyroidectomy and histological examination revealed bilateral and multifocal medullary carcinoma of the thyroid. These two patients belong to a large family in whom another 12 affected members with medullary carcinoma of the thyroid were found. Our description is the first report of an association between Hirschsprung's disease and isolated familial medullary carcinoma of the thyroid. We suggest that familial occurrence of Hirschsprung's disease could be an early presentation of familial medullary carcinoma of the thyroid either as the isolated form or as part of multiple endocrine neoplasia type IIa or IIb.
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http://dx.doi.org/10.1515/jpem.1994.7.4.373 | DOI Listing |
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.
View Article and Find Full Text PDFClin Nucl Med
November 2024
From the Department of Nuclear Medicine.
Purpose: We aimed to compare the diagnostic performance of 68Ga-FAPI-04 (FAPI) in comparison to 68Ga-DOTATATE (SSTR) PET/CT for patients presenting with recurrent medullary thyroid carcinoma (MTC).
Patients And Methods: Sixteen MTC patients with elevated calcitonin levels (>150 pg/mL) underwent FAPI and SSTR PET/CT. Two nuclear medicine physicians evaluated all images, categorizing lesions into locoregional metastases, mediastinal lymph nodes (LNs), liver, and bone metastases.
Clin Nucl Med
February 2025
From the Department of Nuclear Medicine.
Purpose: We aimed to compare the diagnostic performance of 68Ga-FAPI-04 (FAPI) in comparison to 68Ga-DOTATATE (SSTR) PET/CT for patients presenting with recurrent medullary thyroid carcinoma (MTC).
Patients And Methods: Sixteen MTC patients with elevated calcitonin levels (>150 pg/mL) underwent FAPI and SSTR PET/CT. Two nuclear medicine physicians evaluated all images, categorizing lesions into locoregional metastases, mediastinal lymph nodes (LNs), liver, and bone metastases.
Int J Mol Sci
December 2024
Department of Physics "G. Occhialini", Università degli Studi di Milano-Bicocca, Piazza Della Scienza 3, 20126 Milan, Italy.
Medullary thyroid carcinoma (MTC), a rare neuroendocrine tumor comprising 3-5% of thyroid cancers, arises from calcitonin-producing parafollicular C cells. Despite aggressive behavior, surgery remains the primary curative treatment, with limited efficacy reported for radiotherapy and chemotherapy. Recent efforts have explored the pathogenetic mechanisms of MTC, identifying it as a highly vascularized neoplasm overexpressing pro-angiogenic factors.
View Article and Find Full Text PDFBiomedicines
December 2024
Oncological Endocrinology Unit, IRCCS Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144 Rome, Italy.
: The current possible treatments of advanced medullary carcinoma (MTC) include different drugs belonging to the class of tyrosine kinase inhibitors (TKIs): vandetanib, cabozantinb, and selpercatinib. Although the effects of these TKIs have been well described in clinical trials, the real-practice evidence of the effectiveness and safety of these treatment is scant. This real-world case series aims to describe a niche of patients with advanced MTC treated with more than one TKI by focusing on treatment responses and any reported adverse events (AEs) and to provide additional insight on the individualized approach to the management of metastatic MTC.
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