B. Lymphoma – Explanation
Hashimoto’s thyroiditis is associated with thyroid lymphoma
Thyroid cancer
Features of hyperthyroidism or hypothyroidism are not commonly seen in patients with thyroid
malignancies as they rarely secrete thyroid hormones
| Type | Percentage | Often young females – excellent prognosis |
| Papillary | 70% | |
| Follicular | 20% | |
| Medullary | 5% | Cancer of parafollicular cells, secrete calcitonin, part of MEN-2 |
| Anaplastic | 1% | Not responsive to treatment, can cause pressure symptoms |
| Lymphoma | Rare | Associated with Hashimoto’s |
Management of papillary and follicular cancer
- total thyroidectomy
- followed by radioiodine (I-131) to kill residual cells
- yearly thyroglobulin levels to detect early recurrent disease
