Fig. 2
From: Localized Erdheim-Chester disease involving the thyroid gland—a case report
a, b Contrast-enhanced CT scan of the neck, axial views, showing a mildly enhancing soft tissue involving the left lobe of the thyroid and adjacent strap muscles and b “pericarotid cuffing” of the common carotid and internal carotid artery (arrow) with the lesion. The internal jugular vein is not visualized because of compression by the mass lesion; however, there is no evidence of carotid stenosis. c Whole-body FDG-PET scan showing increased uptake in the left thyroid/perithyroid region (arrow) without any abnormal uptake elsewhere in the body