J Surg Ultrasound.  2021 Nov;8(2):37-40. 10.46268/jsu.2021.8.2.37.

Preoperative Staging of Thyroid Cancer by Ultrasonography

  • 1Division of Breast-Thyroid Surgery, Department of Surgery, Chosun University College of Medicine, Gwangju, Korea


An ultrasonogram is very useful for the diagnosis of thyroid cancer and determining the preoperative stage. Accurate staging before surgery using an ultrasonogram is essential for determining the extent of surgery. This review summarizes the use of ultrasonography in the preoperative staging of thyroid cancer.


Ultrasonography; Thyroid carcinoma; Stage


  • Fig. 1 Ultrasonographic image of T1 (≤2 cm) papillary thyroid carci-noma confined to thyroid gland. (A) T1a (≤1 cm) papillary thyroid carci-noma showing taller than wide appearance with internal microcalci-fication. (B) T1b (>1 cm but ≤2) papillary thyroid carcinoma showing irregular margin with internal micro-calcification.

  • Fig. 2 Ultrasonographic image of T2 (>2 cm but ≤4 cm) papillary thyroid carcinoma confined to thyroid gland.

  • Fig. 3 Ultrasonographic image of T3 papillary thyroid carcinoma showing invasion to strap muscle.

  • Fig. 4 Ultrasonographic image of N1a. Lymph node without fatty hilum in level VI.

  • Fig. 5 Ultrasonographic image of N1b. Lymph node with internal microcalcification and without fatty hilum in lateral to left jugular vein.


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