Conclusion: It is the important sign to diagnose papillary carcinoma that the volume of the thyroid is enlarged with aggressive mass, vague margin, and granular calcification.

• 结论：甲状腺体积增大，肿块呈浸润性生长，边界不清的伴有颗粒状钙化的，是诊断甲状腺乳头状癌的重要指征；