Magnetic resonance is recently used ever more frequently also in the diagnosis of tumours of the sympathetic nerve, which are among the most frequent tumours of child age. It assesses more reliably than other imaging methodsthe size of thetumour, its stageandresectability.The advantage is in particular the possibility to visualize the tumour in selected planes, the possibility to assess accurately the relationship of the tumour to blood vessels and the spinal canal incl. the spinal cord and last but not least the patient is spared the radiation load. Magnetic resonance is becoming in suspect tumours of the sympathetic nerve a decisive diagnostic method of the imaging algorithm.

        Key words: MRI, tumours of the sympathetic nerve - neuroblastoma in children