Figure 3From: Clinical significance of incidental thyroid nodules identified on low-dose CT for lung cancer screeningA 53-year-old man with papillary thyroid carcinoma. (A) Low-dose helical CT scan demonstrated a 9 mm hypodense nodule (arrow) with peripheral rim calcification in the right thyroid lobe. (B) Transverse US image of the right thyroid lobe showed a hypoechoicnodule (calipers) with peripheral rim calcification.Back to article page