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Inicio Acta Otorrinolaringológica Española Diagnóstico y control evolutivo de los paragangliomas de cabeza y cuello. Aport...
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Vol. 60. Issue S1.
Paragangliomas cervicocefálicos
Pages 68-75 (February 2009)
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Vol. 60. Issue S1.
Paragangliomas cervicocefálicos
Pages 68-75 (February 2009)
Diagnóstico y control evolutivo de los paragangliomas de cabeza y cuello. Aportaciones de la medicina nuclear
Diagnosis and follow-up of head and neck paragangliomas. Contributions of nuclear medicine
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3055
Pilar Tamayo Alonsoa, Ricardo Ruano Péreza, Ángel Muñoz Herrerab
a Servicio de Medicina Nuclear. Hospital Universitario de Salamanca. Salamanca. España.
b Servicio de Otorrinolaringología y Patología Cérvico-Facial. Hospital Universitario de Salamanca. Salamanca. España.
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Los paragangliomas de cabeza y cuello (PgCC) son tumores neuroendocrinos que expresan receptores tipo 2 para la somatostatina, y como tal pueden visualizarse mediante técnicas de imagen nuclear, utilizando análogos de la somatostatina marcados con un radionúclido, concretamente con la 111In-pentetreótida. Gammagrafía con 111In-pentetreótida es una técnica segura y no invasiva, que nos permite explorar el cuerpo entero; así, podemos detectar Pg multifocales y malignos con metástasis locales y a distancia. Al ser una técnica funcional, es de gran utilidad para confirmar la existencia de recidiva o tumor residual, en el seguimiento de pacientes sometidos a cirugía. Los Pg pueden tener origen familiar, por lo que puede utilizarse para cribado de casos familiares. Recientemente, han surgido otras técnicas de imagen nuclear para el diagnóstico de estos tumores, basadas en la tecnología de la tomografía por emisión de positrones (PET). Potencialmente, se pueden utilizar análogos de la somatostatina marcados con radionúclidos adecuados para el tratamiento de los Pg.
Palabras clave:
Paraganglioma
Gammagrafía
111In-pentetreótida
Somatostatina
Radionúclido
PET
Head and neck paragangliomas are neuroendocrine tumors that express somatostatin type 2 receptors and can consequently be visualized through nuclear imaging techniques, using radionuclide-labelled somatostatin analogs, specifically 111In-pentetreotide.111In-pentetreotide scintigraphy is a safe and non-invasive technique that can be used to explore the entire body; thus, multifocal paragangliomas as well as malignant paragangliomas with local and distant metastasis can be detected. Because this technique is functional, it is highly useful to confirm recurrence or residual tumors, as well as to follow-up patients undergoing surgery. Paragangliomas can be familial and consequently this technique can be used for screening of familial cases. Recently, other nuclear imaging techniques, based on positron emission tomography (PET) technology, have been developed for the diagnosis of these tumors. Appropriately radiolabeled somatostatin analogs could potentially be used for the treatment of paragangliomas.
Keywords:
Paraganglioma
Scintigraphy
111In-pentetreotide
Somatostatin
Radionuclide
PET

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