Publication date: Available online 10 May 2018
Source:Revista Española de Medicina Nuclear e Imagen Molecular
Author(s): J. López-Gómez, S. Medina-Ornelas, M.A. Salazar-Álvarez, M. Álvarez-Bojórquez, N. Zaragoza-Cruz, J. Melchor-Ruan, A. Álvarez-Cano
IntroducciónEl carcinoma medular representa el 1-2% de todas las neoplasias tiroideas malignas. El 13-20% de los pacientes presenta metástasis a distancia, afectando al hígado en el 45% de los casos.Presentación de un casoUna mujer de 50 años de edad, diagnosticada de carcinoma medular de tiroides, fue sometida a tiroidectomía total y disección cervical modificada en 1999. Se trataron con resección quirúrgica 2 recidivas ganglionares en el cuello; durante el periodo de vigilancia, la paciente desarrolló niveles elevados de calcitonina, identificándose la localización de la recidiva en el hígado mediante PET/TC con 18F-DOPA. La actividad metabólica no se asoció a lesión visible en TC, RM y ecografía. La cirugía radioguiada con 18F-DOPA permitió la resección anatómica de los segmentos IVb y V.DiscusiónEn pacientes con carcinoma medular y elevación de calcitonina durante el periodo de vigilancia, la PET/TC con 18F-DOPA es una opción para evaluar la localización de la recidiva. La resección radioguiada fue posible en esta paciente, cuya recidiva hepática no resultó visible con ningún otro método de imagen.ConclusiónLa resección hepática radioguiada con 18F-DOPA en el carcinoma medular de tiroides metastásico es factible cuando la localización de la recidiva no puede identificarse anatómicamente mediante otros estudios de imagen.IntroductionMedullary carcinoma accounts for 1–2% of all thyroid malignancies. 13–20% of patients present with distant metastasis, with 45% of the cases affecting the liver.Clinical caseA 50-year-old woman, diagnosed with medullary thyroid carcinoma, was treated with total thyroidectomy and a modified neck dissection in 1999. Two lymph node recurrences in the neck were treated with surgical resection; during surveillance, she developed elevated calcitonin levels, the recurrence site was identified with 18F-DOPA PET/CT in the liver. Metabolic activity was not associated with a visible lesion in CT, MRI nor ultrasound. Radioguided surgery with 18F-DOPA allowed an anatomic resection of segments IVb and V.DiscussionIn patients with medullary carcinoma and elevated calcitonin during surveillance, 18F-DOPA PET/CT is an option to evaluate the site of recurrence. Radioguided resection was feasible in this patient, whose hepatic recurrence was not visible with any other imaging method.ConclusionRadioguided hepatic resection with 18F-DOPA in metastatic medullary thyroid carcinoma is feasible when the recurrence site is not anatomically identified by any other imaging studies.
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Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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Resección hepática radioguiada con 18F-DOPA en un paciente con carcinoma medular de tiroides metastásico
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