English: Supplementary Material: cine loop video. An artifact in the isthmus of thyroid from tissue compression on elastogram (upper image) in patient with Hashimoto thyroiditis, with no real focal lesions evident on B-mode ultrasound (lower image) [Fig 5]. A hard stiff pseudolesion is generated during the compression with ultrasound probe and resolved during decompression. To avoid such artifacts no pressure on the probe during elasticity evaluation should be applied.