Ultrasound of thyroid nodule and parathyroid adenoma showing well-defined solid mass (21 × 18 × 36 mm) with increased vascularity in relation to the upper pole of the left thyroid lobe and lateral to the isthmus suggesting PA; and heterogeneous solid isoechoic nodule (23 × 16 × 38 mm) in the left thyroid lobe appearing wider than tall, with predominant peripheral vascularity suggesting a left thyroid nodule (GPA: giant parathyroid adenoma; St M: strap muscle; C Sh: carotid sheath; Thy N: thyroid nodule).