Name : Marina
Family : Pourafkari
Affiliation :Radiology Department,Taleghani Hospital,SBMU
Academic Degree : Associate Professor of Radiology
Resident : Mersad Mehrnahad,Afarin Sadeghian
Head & Neck Imaging
Gender : Female
Age : 63
63-year-old woman presented with neck mass
On unenhanced and contrast-enhanced CT scans,homogeneously hyperenhancing mass is seen in right carotid space at the level of thyroid cartilage that is circumferentially in contact with CCA.The mentioned mass follows the vessels upto the suprahyoid level and at the hyoid and suprahyoid levels,ICA and ECA are not clearly distinguishable.
Carotid Body Paraganglioma
Discussion (Related Text)
The carotid body, the largest compact collection of paraganglia in the head and neck, is located on the medial aspect of the carotid bifurcation on each side of the neck. The carotid body tumor, which originates from these paraganglionic cells, is the most common paraganglioma of the head and neck. The average age at diagnosis is usually the fifth decade of life, and the sex incidence is known to be nearly equal. The typical clinical presentation of a carotid body tumor is a painless, slowly growing lateral neck mass. On CT scans, the carotid body tumor manifests as a well-defined soft-tissue mass within the carotid space of the infrahyoid neck. Splaying of the internal and external carotid arteries is a distinctive imaging feature on CT, MRI, and angiography, which is highly suggestive of a carotid body tumor. Paragangliomas including carotid body tumors typically show homogeneous and intense enhancement after IV administration of contrast material because of their hypervascularity.
AJR:187, August 2006