Abstract

1. Introduction

A 60-year-old male was admitted to hospital because of "thyroid nodules for 20 years, enlargement for half a year, with suffocation and hoarseness, aggravating for 20 days". B ultrasound examination showed "diffuse enlargement of thyroid gland and increased blood flow signals in bilateral thyroid lobes" (Figure 1). Surgical examination showed that the thyroid gland was grade III large, the right lobe protruded from the skin surface along the sternocleidomastoid muscle and extended to the mastoid level, with the size of 14×7cm; the left lobe was enlarged, with the size of about 7×4cm. There was no tenderness in both leaves. Thyroid function: FT3: 6.2pmol/l, FT4: 29.88, hTSH: 0.59uiu/ml. Thyroid fine needle aspiration was performed.