2024年8月28日 · Both anatomical and functional imaging of paragangliomas is required for diagnosis and staging. Anatomical imaging includes CT and MRI. Multiple functional imaging modalities exist: 123 I-MIBG scintigraphy, 18 F-FDA PET, 18 F-DOPA PET, 18 F-FDG PET and 68 Ga-DOTATATE PET. CT and MRI are the initial imaging modalities for tumor localization.

Extraadrenal paragangliomas have nearly identical imaging features, including a homogeneous or heterogeneous hyperenhancing soft-tissue mass at CT, multiple areas of signal void interspersed with hyperintense foci (salt-and-pepper appearance) within tumor mass at MRI, and an intense tumor blush with enlarged feeding arteries at angiography.

Pheochromocytomas and abdominal paragangliomas (PPGLs) are rare tumors arising from the adrenal medulla or the sympathetic nervous system. This review presents a practical guidance for clinicians dealing with PPGLs. The incidence of PPGLs has risen. Most cases are detected via imaging and less present with symptoms of catecholamine excess.

2019年7月2日 · In patients with clinical suspicion or laboratory evidence of PPGL, imaging is usually performed to localize the lesion and evaluate for any metastatic disease, often with a CT or MRI of the abdomen and pelvis .

2017年8月6日 · CT demonstrates a retroperitoneal mass, located between the aorta and vena cava, with marked enhancement on the late arterial phase. On the portal phase the enhancement persists. It is possible to see that the mass doesn't invade any of the adjacent structures, only causes a little bulging of the inferior vena cava.

present case series illustrates the Computed Tomography (CT) imaging features of three instances of extra-adrenal abdominal paragangliomas. The discussed cases include Retroperitoneal paraganglioma with Inferior Vena Cava (IVC) infiltration and

Pheochromocytoma and paraganglioma imaging findings. On computed tomography (CT), the typical appearance of a pheochromocytoma or paraganglioma is a mass with an unenhanced density greater than 10 Hounsfield units (HU), avid contrast enhancement due to a rich capillary network, and delayed washout [1] .

Several radiologic imaging and nuclear imaging techniques are currently available to evaluate extraadrenal paragangliomas of the body. Among these imaging methods, the primary methods of diagnosis are ana- tomic imaging techniques, including CT and MRI, and functional imaging techniques with metaiodobenzylguanidine (MIBG) scintigraphy.

2024年2月29日 · After confirming catecholamine excess, contrast-enhanced computed tomography (CT) scanning or magnetic resonance imaging (MRI) of the abdomen and pelvis are the imaging tests of choice. Nonionic contrast is necessary for CT scanning to prevent triggering a catecholamine crisis.

2022年3月1日 · Paragangliomas can be discovered as abdominal masses on imaging in patients without typical symptoms of catecholamine hyper-secretion. If a radiology report suggests a high likelihood of a paraganglioma it is critical to delay a potentially high-risk biopsy until further evaluation can be completed. 1. Introduction.