Fig. 1From: Case report and literature review: Horner syndrome subsequent to endoscopic thyroid surgerya Ultrasound imaging demonstrated a nodule (0.51 × 0.47 × 0.47 cm) that was located at the middle and upper part of the right thyroid gland; b Ultrasound imaging demonstrated a nodule (0.50 × 0.54 × 0.28 cm) that was located at the isthmus of the thyroidBack to article page