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Table 2 Comparison of tumor characteristics between the PTC + SHPT and PTC groups

From: Coexistence of papillary thyroid carcinoma in secondary hyperparathyroidism

  PTC + SHPT (n = 34) PTC (n = 136) p
Age* (years) 47 (30–69) 47 (30–69) 1.000
Male 15 (44.1%) 15 (44.1%) 1.000
Tumor diameter* (mm) 5.57 (0.5–15) 9.00 (0.5–40)  < 0.001
Tumor diameter < 10 mm 29 (85.29%) 86 (63.24%) 0.014
Tumor bilaterality 9 (26.47%) 29 (21.32%) 0.499
Tumor multicentricity 15 (44.12%) 39 (28.68%) 0.066
Tumor extrathyroidal extension 2 (5.88%) 19 (13.97%) 0.255
Lymph node metastasis rate 12 (35.29%) 49 (36.03%) 1.000
  1. PTC papillary thyroid carcinoma, SHPT secondary hyperparathyroidism
  2. p < 0.05 was considered statistically significant
  3. *Average (min–max)