J Korean Radiol Soc.  1994 Nov;31(5):807-811.

CT Features of Second Branchial Cleft Cysts: Emphasis on the Locations of Lesionst

• Kim SJ
• Seo JJ
• Han DS
• Kim BG
• Park BR
• Ko KS
• Oh JS

Abstract

PURPOSE
The purpose of this study was to evaluate the CT features of second branchial cleft cysts.
MATERIALS AND METHODS
We retrospectively analyzed the computed tomographic images in nine cases of second branchial cleft cyst which was confirmed pathologically. Emphasis was on localization of the masses to fascial spaces as defined by the deep cervical fasica.
RESULTS
In all nine cases, the lerions were located in the submandibular and carotid spaces. Among these cases, six(67%) had simultaneous involvement of the other contiguous spaces, such as anterior and posterior cervical spaces. All cases had round or oval, unilocular, cystic masses with partial or complete rim enhancement. In eight cases(89%), smooth and thin walls were observed. In one case, thick wall and septations were noted. No definite calcifications were noted in all cases. The internal contents of cystic masses showed relatively homogeneous appearance, and CT number ranged from 20 to 35.2 Hounsfield unit(HU)(mean, 28.4HU).
CONCLUSION
CT diagnosis of second branchial cleft cyst would be easily obtained from recognition of frequent simultaneous involvement of the other contiguous spaces, along with a typical location and characteristic morphology.

MeSH Terms

Branchial Region*
Branchioma*
Diagnosis
Retrospective Studies