Figures & data
Table 1. The clinical characteristics and outcomes of RFA in the 6 patients with low risk small papillary thyroid carcinoma.
Figure 1. Volume changes of ablation zones after radiofrequency ablation of papillary thyroid carcinomas.
![Figure 1. Volume changes of ablation zones after radiofrequency ablation of papillary thyroid carcinomas.](/cms/asset/8de77963-0663-4b31-98c3-a38c84d2c3f7/ihyt_a_1230893_f0001_b.jpg)
Figure 2. (A, B and C) Complete disappearance of papillary thyroid carcinoma after radiofrequency ablation. (A) Ultrasonography of a 64-year-old woman revealed a 10 mm mass proven as a papillary thyroid carcinoma on both fine-needle aspiration and core-needle biopsy in the right thyroid gland. (B) At 1-month follow-up after radiofrequency ablation, ultrasonography revealed a 12 mm ablation zone. (C) At 2-year follow-up, the ablation zone completely disappeared on ultrasonography.
![Figure 2. (A, B and C) Complete disappearance of papillary thyroid carcinoma after radiofrequency ablation. (A) Ultrasonography of a 64-year-old woman revealed a 10 mm mass proven as a papillary thyroid carcinoma on both fine-needle aspiration and core-needle biopsy in the right thyroid gland. (B) At 1-month follow-up after radiofrequency ablation, ultrasonography revealed a 12 mm ablation zone. (C) At 2-year follow-up, the ablation zone completely disappeared on ultrasonography.](/cms/asset/ca68e270-21fd-4243-9ec8-d1dd6e8a59d5/ihyt_a_1230893_f0002_b.jpg)
Figure 3. (A–E) Gradual reduction and complete disappearance of papillary thyroid carcinoma after radiofrequency ablation. (A) Ultrasonography of a 76-year-old woman revealed a 6-mm mass in the left thyroid gland. (B) FNA cytology of the mass revealed papillary thyroid carcinoma cells with nuclear atypia, including nuclear grooves, high N/C ratio and nuclear pseudoinclusion (Papanicolaou stain, original magnification ×400). (C) At 2-year follow-up after radiofrequency ablation, US revealed a smaller but persistent, 4-mm ill-defined ablation zone in the left thyroid gland. (D) FNA cytology of the ablation zone demonstrated benign follicular epithelial cells with hemosiderin pigment-laden macrophages (× 100). (E) At 4-year follow-up, US revealed complete disappearance of the ablation zone.
![Figure 3. (A–E) Gradual reduction and complete disappearance of papillary thyroid carcinoma after radiofrequency ablation. (A) Ultrasonography of a 76-year-old woman revealed a 6-mm mass in the left thyroid gland. (B) FNA cytology of the mass revealed papillary thyroid carcinoma cells with nuclear atypia, including nuclear grooves, high N/C ratio and nuclear pseudoinclusion (Papanicolaou stain, original magnification ×400). (C) At 2-year follow-up after radiofrequency ablation, US revealed a smaller but persistent, 4-mm ill-defined ablation zone in the left thyroid gland. (D) FNA cytology of the ablation zone demonstrated benign follicular epithelial cells with hemosiderin pigment-laden macrophages (× 100). (E) At 4-year follow-up, US revealed complete disappearance of the ablation zone.](/cms/asset/0a50327b-5fcc-4172-994e-335b0c7f733a/ihyt_a_1230893_f0003_c.jpg)
Figure 4. (A–D) Gradual reduction and resultant calcified residues of papillary thyroid carcinoma after radiofrequency ablation. (A and B) Transverse and longitudinal ultrasonography of a 79-year-old man revealed an 11-mm mass proven as a papillary thyroid carcinoma on-fine needle aspiration in the right thyroid gland. (C and D) At 4-year follow-up after radiofrequency ablation, transverse and longitudinal ultrasonography revealed a 3-mm calcified residue in the ablation zone. At 3 year, fine-needle aspiration and core-needle biopsy of the ablation zone revealed no tumour cells (results not shown).
![Figure 4. (A–D) Gradual reduction and resultant calcified residues of papillary thyroid carcinoma after radiofrequency ablation. (A and B) Transverse and longitudinal ultrasonography of a 79-year-old man revealed an 11-mm mass proven as a papillary thyroid carcinoma on-fine needle aspiration in the right thyroid gland. (C and D) At 4-year follow-up after radiofrequency ablation, transverse and longitudinal ultrasonography revealed a 3-mm calcified residue in the ablation zone. At 3 year, fine-needle aspiration and core-needle biopsy of the ablation zone revealed no tumour cells (results not shown).](/cms/asset/b91e803e-973b-4242-96a0-84793f6ce441/ihyt_a_1230893_f0004_c.jpg)