Radiology Teaching Files > Case 5174716

Contributed by: Faculty and residents Children's Hospital.
Patient: 14 year old female
History: 14 year old girl with anterior neck swelling detected on physical exam

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

US: Complex 2.3 cm hypoechoic cystic lesion at the left inferior pole of the thyroid.

CT: Cystic lesion anterolateral to the trachea and abutting the lower pole of the thyroid gland.  Hypodense and non-enhancing.

Diagnosis: Tracheal duplication cyst confirmed at surgery/pathology

Differential diagnosis:
-Foregut duplication cyst
-Thymic cyst
-Thyroid cyst
-Pericardial cysts (differential by location)

Bronchogenic cysts most commonly mediastinal - precarinal, paratracheal, retrocardiac

Usually incidental in adults, but if large can present in childhood with stridor or dysphagia from mass effect on the trachea or esophagus.

Imaging features:  Sharply marginated, cystic with water or soft tissue density if higher protein content.  No enhancement.  Low T1, High T2 on MRI.

No comments posted.
Additional Details:

Case Number: 5174716Last Updated: 06-30-2006
Anatomy: Face and Neck   Pathology: Congenital
Modality: CT, USExam Date: 03-10-2006Access Level: Readable by all users
Keywords: tracheal duplication cyst

The reader is fully responsible for confirming the accuracy of this content.
Text and images may be copyrighted by the case author or institution.
You can help keep MyPACS tidy: if you notice a case which is not useful (e.g. a test case) or inaccurate, please send email to