Figure 1

Lymphatic vessels on LCEUS. A 36-year male patient with PTC underwent LCEUS. (a) After subcapsular injection, the contrast agent slowly and uniformly diffuses in the thyroid parenchyma (long arrows), except for the primary tumor (T). (b) A lymphatic vessel (thin arrow) starts from the capsule of thyroid (long arrow), runs along the fascia and connects with one LN (thick arrows). (c) Three lymphatic vessels (thin arrows) connect with one LN (thick arrows). PTC papillary thyroid carcinoma, LN lymph node, LCEUS lymphatic contrast enhanced ultrasound.