Fig. 5From: Opinion: leading position of ultrasound in decision algorithm for small papillary thyroid carcinomaDecision algorithm regarding PTC. Thyroid US is central in decision algorithm of small size PTC. Unfavourable factors, including young age < 20 years, previous radiation exposure and family history of thyroid cancer [18], and recurrent laryngeal nerve (RLN) palsy should lead to thyroid surgery. Five US criteria, including size > 7 mm, particular location, ETE, DSV features, suspicious lymph nodes, associated with aggressive behaviour (cytology, molecular) on FNA should lead to surgery [9, 19]Back to article page