Asunto(s)
Carcinoma Papilar Folicular/diagnóstico por imagen , Carcinoma Papilar Folicular/secundario , Carcinoma Papilar/diagnóstico por imagen , Carcinoma Papilar/secundario , Radioisótopos de Yodo/uso terapéutico , Enfermedades Renales Poliquísticas/diagnóstico por imagen , Radiofármacos/uso terapéutico , Tomografía Computarizada por Tomografía Computarizada de Emisión de Fotón Único , Yoduro de Sodio/uso terapéutico , Neoplasias de la Tiroides/patología , Imagen de Cuerpo Entero , Anciano de 80 o más Años , Carcinoma Papilar/radioterapia , Carcinoma Papilar/cirugía , Carcinoma Papilar Folicular/radioterapia , Carcinoma Papilar Folicular/cirugía , Diagnóstico Diferencial , Reacciones Falso Positivas , Femenino , Humanos , Radioisótopos de Yodo/farmacocinética , Neoplasias Primarias Múltiples/cirugía , Radiofármacos/farmacocinética , Radioterapia Adyuvante , Yoduro de Sodio/farmacocinética , Hormonas Tiroideas/uso terapéutico , Neoplasias de la Tiroides/cirugía , Tiroidectomía , Distribución Tisular , UltrasonografíaRESUMEN
Head and neck paragangliomas are rare neuroendocrine tumors expressing somatostatin receptors on their cell surface, particularly subtype 2. Due to this distinctive feature, images can be obtained in Nuclear Medicine using synthetic analogues of somatostatin, mainly octreotide, which allow selective display by planar scintigraphy, SPECT-CT or PET-CT imaging after radiolabeling with (111)In or (68)Ga. Three cases have been selected and presented from a series of patients that illustrate the utility of SPECT-CT studies with (111)In-octreotide in the diagnosis and monitoring of this type of tumor. These are characterization at initial diagnosis, staging, and detection of local recurrence or metastasis, with added value with respect to anatomical images (nuclear magnetic resonance, computed axial tomography, angiography), for example in the differentiation between functional tissue or scar in patients who had previously undergone surgery.