Remarkable Presentation: Anaplastic Thyroid Carcinoma Arising from Chronic Hyperthyroidism

Figure 1

Significantly enlarged thyroid mass causing tracheal deviation to the right (blue arrow) with hypoattenuation within the left thyroid lobe (red arrow) (a). Scattered calcifications (green arrows) apparent within the lesion (b) with extension into the anterior mediastinum and continued deviation of the trachea (c).

(a)

(b)

(c)