Abstract
The course of painless thyroiditis is usually transient with a thyrotoxicosis phase that lasts for 2 months before recovery. Therefore, no treatment is required. This case is unusual because of the recurrence and severity of thyrotoxicosis, which required surgery of the thyroid gland to prevent a thyrotoxic crisis. A 43-year-old female who presented with severe thyrotoxicosis was found to have low radioactive iodine uptake, negative test results for TSH receptor antibodies, normal erythrocyte sedimentation rate and diffuse goiter without pain or tenderness; these findings suggested a diagnosis of painless thyroiditis. She was treated for relapsed painless thyroiditis for 10 years. However, in May 2014, she developed recurrent painless thyroiditis with severe thyrotoxicosis; free T4 41.5 ng/dL, TSH <0.005 mlU/mL. Owing to the severity and recurrence of thyrotoxicosis, total thyroidectomy was performed to prevent a thyrotoxic storm.
References
2. Woolf PD. Transient painless thyroiditis with hyperthyroidism: a variant of lymphocytic thyroiditis? Endocr Rev. 1980; 1(4):411–20.
3. Umena S, Takano T, Iijima T, Hidaka Y, Yagoro A, Takai S. et al. A case of repeated painless thyroiditis followed by Graves' disease. Endocr J. 1995; 42(6):821–6.
4. Na GJ, Kim JH, Park SY, Kim KW, Ko HJ, Jeon SW. et al. A case of painless thyroiditis followed by Graves' disease Endocrinol Metab. 2012; 27(2):147–50.
5. Mizukami Y, Michigishi T, Hashimoto T, Tonami N, Hisada K, Matsubara F. et al. Silent thyroiditis: a histologic and immunohistochemical study. Hum Pathol. 1988; 19(4):423–31.
6. Agarwal A, Mishra A, Mishra SK, Agarwal G, Mithal A, Krishnani N. Recurrent painless thyroiditis requiring total thyroidectomy. J Assoc Physicians India. 2000; 48(3):367–8.
7. Mitsunaga M, Hasegawa K, Nakagawa O, Nakashima Y, Miyoshi M, Suzuki S. et al. Recurrent transient thyrotoxicosis with painless thyroiditis– a case report. Acta Med Okayama. 1979; 33(1):43–51.
8. Ohye H. Recurrent severe painless thyroiditis requiring multiple treatments with radioactive iodine. Thyroid. 2008; 18(11):1231–2.
10. Ishii H, Takei M, Sato Y, Ito T, Ito K, Sakai Y. et al. A case of severe and recurrent painless thyroiditis requiring thyroidectomy. Med Princ Pract. 2013; 22(4):408–10.