Abstract
Painful Hashimoto's thyroiditis is an atypical variant of Hashimoto's thyroiditis characterized by thyroid pain and fever. In patients with this condition, anti-inflammatory agents are not always effective as in those with subacute thyroiditis. Therefore, long-term pain management is an important issue. We report herein four cases of painful Hashimoto's thyroiditis requiring total thyroidectomy to relieve thyroid pain and histologic findings of the thyroid gland. All patients had high titers of anti-thyroperoxidase (TPO) and thyroglobulin antibodies. Three were hypothyroid, and the other was euthyroid. During the first visit, four patients had fever and/or thyroid pain with elevated C-reactive protein or erythrocyte sedimentation rate, and they were treated with oral corticosteroids given continuously or intermittently for 9 to 48 months. Because a reduction or discontinuation of corticosteroids caused recurrent painful attacks, the decision was made to perform surgery. After total thyroidectomy, their symptoms disappeared. The histopathologic characteristics of these hypothyroid cases were advanced fibrosis and destructive thyroid architecture. One euthyroid case showed a mild fibrous change and the presence of foreign body type giant cells. In conclusion, total thyroidectomy is the effective and reliable treatment for patients with recurrent painful Hashimoto's thyroiditis. Pathologic characteristics include advanced fibrosis and destructive thyroid architecture.
Published Version
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