| Malignant disease | Number of patients (%) |
| Papillary cancer | 115 (83.9) |
| Follicular cancer | 9 (6.6) |
| Medullary cancer | 5 (3.6) |
| Anaplastic carcinoma | 4 (2.7) |
| Hurthle cell carcinoma | 2 (1.5) |
| Squamous carcinoma | 1 (0.73) |
| Metastatic melanoma | 1 (0.73) |
| Lymphoma | 1 (0.73) |
| Total | 138 |