Carotid body tumor


Patient presented complaining of a mass in the left side of the neck.

Patient Data

Age: 24
Gender: Male

Angio CT of the neck

There is a highly vascular mass measuring 3.6 x 3.3 cm in the left carotid space situated between and splaying the external and internal carotid arteries (the lyre sign). 

The external carotid artery is totally encased by the tumor, the internal carotid artery is not completely encased.Albeit that, both arteries do not show signs of narrowing of their lumens.


Ultrasound of the neck

US images show a hypoechoic and heterogeneous mass.The Doppler imaging demonstrates a highly vascular pattern.

Case Discussion

The carotid body tumor is one of the commonest paragangliomas of the neck.

This tumor originates from cells located at the bifurcation of the common carotid artery. The tumor causes the splaying of the external and internal carotid arteries, causing the radiological sign knows as the Lyre sign.

Usually, there are no symptoms, just a palpable and pulsatile mass in the neck, due to its high vascularity.

There are cases in which the tumor is bilateral, this is more common in familial cases than sporadical cases.

PlayAdd to Share

Case information

rID: 47694
Published: 23rd Oct 2016
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.