Definition: Calcification of the thyroid cartilage. Seen on pantomographs and lateral cephalometric skull radiographs.
Location: Inferior to hyoid and anterior to cervical vertebrae.
Edge: Well-defined, smooth or irregular outline.
Shape: Will have same shape as thyroid viewed from lateral aspect.
Internal: Radiopaque border with radiolucent center to mixed radiopaque/radiolucent.
Number: Single, as there is only one thyroid.
Thyroid cartilage – Lateral cephalometric skull radiograph
Thyroid cartilage – Pantomograph