MR Imaging of thyroglossal duct cysts in adults

A Rare Case of Squamous Cell Carcinoma in Thyroglossal Duct Cyst

“…A solid nodule as such in the midline of the neck may represent an ectopic or maldescended thyroid, and the lower neck should be checked for an orthotopic gland. On MR images, a TDC may appear as a simple cyst (low T1 and high T2 signal intensity) but is most frequently of high T1 and T2 signal intensity, consistent with high protein/ thyroglobulin content (13,14) . Hemorrhage within a cyst may account for variability of CT density and particularly of MR intensity, although variability was evident with both the benign TDC cases and cases of carcinoma.…”

Giant dermoid cyst of the neck can mimic a cystic hygroma: Using MRI to differentiate cystic neck lesions

“…Most of these cysts are located near the midline and most are at or below the hyoid bone. They have high intensity on T2-weighted MRI and may be embedded in the strap muscles, which can be a distinguishing feature [14].…”

Assessment of lesions arising or extending in the submental region with magnetic resonance imaging

“…An uncomplicated thyroglossal duct cyst has a low SI on T1WI and a high SI on T2WI; such findings are reflective of fluid content, as we also noted in the present case. 32 The rim is nonenhancing, unless inflammation is present. 32 In cases involving infection or hemorrhage, a thick, irregular rim may be visualized, and the SI of the fluid varies owing to the presence of proteinaceous debris.…”

“…32 The rim is nonenhancing, unless inflammation is present. 32 In cases involving infection or hemorrhage, a thick, irregular rim may be visualized, and the SI of the fluid varies owing to the presence of proteinaceous debris. 32 In the present case, the lesion was at the level of the hyoid bone and lay in the path of the thyroglossal duct; it was therefore diagnosed as a thyroglossal duct cyst.…”