A rare case of a 123I-MIBG SPECT/CT positive, but 68Ga-DOTA-TOC PET/CT negative pheochromocytoma of the bladder

Publication date: Available online 4 April 2018Source: Revista Española de Medicina Nuclear e Imagen Molecular (English Edition)Author(s): Alexander Stephan Kroiss, Christian Uprimny, Renate Pichler, Rudolf Wolfgang Gasser, Irene Johanna VirgoliniAbstractPheochromocytoma (PHEO) is rare and belongs to the group of neuroendocrine tumours (NETs). These tumours can be found anywhere from the neck to the pelvis associated with sympathetic ganglia. Morphological imaging, for example CT, provides excellent anatomical detail and high sensitivity but lacks specificity as difficulties may occur when distinguishing between tumours derived from the sympathetic nervous system and other tumour entities. In contrast to anatomical imaging, functional imaging (123I-MIBG, 68Ga-DOTA-TOC PET) provides high sensitivity and specificity in detecting NETs.Early detection of PHEO is crucial and has a major effect on treatment and prognosis.This case report describes the important role of anatomical and functional imaging in a patient with a neuroendocrine tumour of unusual origin.ResumenEl feocromocitoma (PHEO) es poco frecuente, y se enmarca en el grupo de los tumores neuroendocrinos (TNE). Dichos tumores pueden encontrarse en cualquier parte, desde el cuello a la pelvis, asociados a los ganglios simpáticos. La imagen morfológica, como en el caso de la TC, aporta un detalle anatómico excelente y una elevada sensibilidad, pero carece de especificidad dado que pueden producirse dificultades a la h...
Source: Revista Espanola de Medicina Nuclear e Imagen Molecular - Category: Nuclear Medicine Source Type: research