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values and metastatic lesions detected by ptWBS. Three out of 4 cases with distant metastases had a serum Tg value > 10 ng/mL (Fig. 1 ). Fig. 1. Serum Tg values in patients with 131 I uptake outside the thyroid bed detected by ptWBS. No
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(MTC) accounts for less than 5% of all thyroid cancers [ 1 , 5 ]. Distant metastases are observed at presentation in 7–23% of MTC patients [ 1 , 5 ] and can be imaged with standardized protocols [ 6 ]. Symptomatic clinical disease will occur in one to
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the aggressive subtype, and (iv) absence of lymph node (LN) involvement and extrathyroidal extension (ETE) apparent on ultrasonography (US) and of clinically detectable distant metastases [ 1 - 5 ]. Thus, the safe selection of candidates for AS largely
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Nova Medical School, Lisbon, Portugal
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and/or stimulated Tg, raising anti-Tg antibodies, or evidence of loco-regional or distant metastases. For each patient, data was recorded regarding age, gender, signs/symptoms at presentation, biochemical parameters, US and cytological findings, type
Institute of Pathology, University Hospital Halle (Saale), Halle (Saale), Germany
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). In a Massachusetts General Hospital series of primary thyroid carcinoma, NTRK fusions were found in 3.1% of cases and 6/11 patients with NTRK fusions had distant metastases ( 12 ). In a series of papillary thyroid carcinomas (PTCs), NTRK fusions
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–4 cm, there is always central lymph node involvement. Distant metastases are to be expected when preoperative basal Ctn levels are higher than 500 pg/mL. What Does This Case Report Add? We describe a case of medullary thyroid
Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia
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Neuroendocrine Department, Diabetes and Metabolic Diseases, Clinical Center of Serbia
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Neuroendocrine Department, Diabetes and Metabolic Diseases, Clinical Center of Serbia
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Endocrine Surgery Department, Diabetes and Metabolic Diseases, Clinical Center of Serbia
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Institute of Pathology, Clinical Center of Serbia, Belgrade, Serbia
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Neuroendocrine Department, Diabetes and Metabolic Diseases, Clinical Center of Serbia
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report highlights difficulties in diagnosing sellar masses when the primary malignancy is undiagnosed. Not only was the primary malignancy not known but there were no other distant metastases either. Of particular challenge was the management of the
Endocrinology Service, Department of Medicine, Hospital Universitário Clementino Fraga Filho, Rio de Janeiro, Brazil
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diagnosis. Tumor size, the presence of local or distant metastases, and first postoperative calcitonin and CEA also reached the level of statistical significance. Surprisingly, age at diagnosis was not a significant factor associated with death in this group
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). In 30–50% of the cases, MTC is accompanied by metastases in cervical and/or paratracheal lymph nodes, and the tumor spreads also to the upper and anterior mediastinal lymph nodes. Distant metastases are present at the diagnosis in 10–15% of patients
Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Department of Pathology, Haukeland University Hospital Bergen, Bergen, Norway
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patients, respectively. Of all the patients with metastatic lymph nodes in the lateral neck, >50% had preoperative calcitonin >1,000 pmol/L. Furthermore, 50% of the patients with clinical distant metastases had calcitonin level ≤3,000 pmol/L, and of the