CT (coronal plane) of the thyroid gland with extension into the mediastinum.Yellow arrow indicates dilated right proximal external and internal jugular vein, orange arrow indicates dilated left internal carotid artery, red arrow indicates displaced trachea to right secondary to mass effect of goiter, purple arrow indicates cystic part of the goiter in the mediastinum compressing the heart, and green arrow indicates the compressed heart with clear plane between the pericardium and goiter.