X-ray and Radionuclide Imaging in the Diagnosis of ACTH-Producing Neuroendocrine Tumors

Ectopic ACTH syndrome caused by excessive production of adrenocorticotropic hormone (ACTH) a neuroendocrine tumor (NET) is an extremely rare disease, the main manifestation which pronounced hypercortisolism. In order to avoid development life-threatening complications and disability patient, timely topical diagnosis rapid decision-making on further management tactics are necessary. The problem NET differential with other formations remains relevant one little-studied. Despite existing wide arsenal methods conventional diagnostics, functional receptor imaging, source disease unidentified in about 20% patients. This article discusses modern possibilities visualization using radionuclide imaging methods, demonstrates diagnostic capabilities somatostatin-receptor scintigraphy single-photon emission computed tomography combined (SPECT/CT) positron (PET/CT) producing ACTH, analyzes radiopharmaceuticals.