Loading Stack -
0 images remaining
Two images, one annotated.
The upper arrow shows the thin lucent halo that differentiates the lesion form the rest of the thyroid parenchyma. The posterior arrow shows the appearance of the halo disappearing.
The halo should be visible in ultrasound imaging in the vast majority of benign thyroid lesions. When it is not visible on imaging, it is a relative indication for FNA. Always best appreciated in real time and not always demonstrated on static images.