Learning objectives
To review and illustrate Magnetic Resonance (MR) imaging features of common and uncommon neck masses in the pediatric age group.
Background
Neck masses in the pediatricage groupare mostly of congenital,
inflammatory or neoplastic etiology.
In this review we will focus on congenital and neoplastic etiology,
as most inflammatory masses areimaged with ultrasound and/or CT (e.g lymphadenitis,
scrofula,
retropharyngeal and peritonsilar abscess and salivary gland inflammation).
Diagnostic approach is initially centered on establishing the origin of the mass and if it is of cystic or solid nature.
Our goal as radiologists is to help to ensure a diagnosis or limited differential.
Ultrasound is generally the first imaging...
Findings and procedure details
CONGENITAL LESIONS
Thyroglossal duct cyst
The most frequent pediatric midline neck mass and tipically presents as a mobile midline asymptomatic mass,
although occasionaly they may become symptomatic due to infection.
They occur along the midline upper neck,
from the base of the tongue to the isthmus of the thyroid gland,
due tofailure of obliteration of thethyroglossal ductduring development.
Usually this patients are diagnosed with ultrasound.
On MR they usually show simple cystic appearance (Fig.
1),
with high signal intensity on T2 and low signal intensityon...
Conclusion
Pediatric neck masses are a diagnostic challenge both for the clinician and the radiologist.
Knowing the most common diagnosis and learningtheir imaging features on MR can help classifying the lesions and shorten the list of differential diagnosis.
References
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