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Glomus tumor of the carotid body

Glomus tumor of the carotid body at the left common carotid artery bifurcation, 1.5 T.
This 45 year old man presented with a two year history of a progressively growing large cervical mass.
Conventional MRI revealed a large mass lesion located in the region of the left common carotid artery bifurcation. MRA delineated the displacement of the internal carotid artery and demonstrated the hypervascular character of the tumor. DSA was not performed as the patient refused surgery.

Fig.1 Coronal T1-weighted spin-echo images demonstrating a large hypointense mass in the region of the carotid bifurcation, displacing both the adjacent carotid artery and the cervical muscles. Multiple small signal void structures are seen within the tumor, suggesting rich vascularization.

Fig.2 Transverse source images from a 3D TOF MRA acquisition show the relationship of the tumor to the adjacent cervical blood vessels to better advantage. The carotid artery is displaced laterally and the tumor extends medially, resulting in moderate mass effect on the pharynx. The rich vascularization of the tumor, derived from external carotid artery branches, is also appreciated.

Fig.3 Coronal T1-weighted spin-echo images (above and middle) and a corresponding MIP reconstruction from the 3D TOF MRA acquisition data set (below) show the tumor and the secondary displacement of the carotid artery displacement, as well as hypertrophy of the external carotid artery branches.

 

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Fig. 1

Glomus tumor of the carotid body, Fig. 1
Glomus tumor of the carotid body, Fig. 2
Glomus tumor of the carotid body, Fig. 3