Table 1 Clinical characteristics of the study group

Age of patients (years)*

56.7 – 1.2

Preoperative calcitonin (pg/ml)*

558 – 62

Postoperative calcitonin (pg/ml)*

167 – 44

Nodule’s size (mm)*

19.8 – 1.0

C cell hyperplasia (number of patients/total)

6/134

MEN 2 (number of patients/total)

2/134

Hereditary cancer (number of patients/total)

14/134

Single nodule (number of patients/total)

72/134