Ready to establish the Intraoperative Parathyroid Scores System (IPSS) for thyroidectomy and study the clinical value of Intraoperative Parathyroid Scores System for thyroidectomy.

IPSS includes transplantation Parathyroid Scores and in situ Parathyroid Scores, the investigators will establish the Intraoperative Parathyroid Scores System by parathyroid size and Blood supply, and recording IPSS, according to certain rules. Parathyroid hormone and calcium were test in d0, d1, d14, d60 post operation. The correlation between Intraoperative Parathyroid Scores and PTH calcium were calculated, and ROC curve and logistic regression were tested for the prediction value.

Inclusion Criteria:

1. postoperative pathology confirmed as thyroid papillary carcinoma;
2. for the first time to undergo thyroid surgery, no history of neck surgery and external radiotherapy;
3. preoperative serum calcium, parathyroid hormone levels were normal;
4. intraoperative and postoperative clinical data integrity, standardized follow-up patients;
5. parathyroid is a tumor violation.

Exclusion Criteria:

1. serious underlying disease;
2. age greater than 60 years of age or combined with arteriosclerotic disease;
3. patients with postoperative loss;
4. patients with parathyroid disease.

Patients who need thyroid surgery