Fig. 22
From: Neoplastic pathology at the crossroads between neck imaging and cardiothoracic imaging
Paraganglioma. a Ultrasound Doppler image shows a hypervascular (arrow) lesion within the right lobe of the thyroid. b Coronal CT image post contrast demonstrates an enhancing lesion within the medial aspect of the right lobe of the thyroid (solid arrow) and in the left carotid space (dashed arrow), both of which were biopsied and shown to be paragangliomas. c Axial T2WI MR of the neck base in a companion case demonstrates the classic salt and pepper appearance of the lesion. The high T2 signal (salt) corresponds to the areas of hemorrhage, and the low signal (pepper) corresponds to the flow voids within the lesion