Summary
Indroduction. More than 100,000 computed tomography scans are performed in Lithuania every year, and about half of them – with iodinated contrast media, which enhance the visibility of organs and blood vessels. Although iodinated contrast media is considered safe, about 0.7–3% of patients experience immediate and 2–5% of patients experience non-immediate hyper sensitivity reactions after the injection.
Background. Hereditary paraganglioma-pheochromocytoma syndrome is characterized by paragangliomas (tumors that arise from neuroendocrine tissues symmetrically distributed along the paravertebral axis from the base of the skull to the pelvis) and by pheochromocytomas (paragangliomas that are confined to the adrenal medulla). Sympathetic paragangliomas hypersecrete catecholamines and are located in the lower mediastinum, abdomen, and pelvis.
