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Recurrent Painless Thyroiditis in Patients with History of Postpartum Thyroiditis
Int J Thyroidol 2018;11(1):49-55
Published online May 30, 2018;  https://doi.org/10.11106/ijt.2018.11.1.49
© 2018 Korean Thyroid Association.

Won Sang Yoo

Department of Internal Medicine, Dankook University Medical College, Cheonan, Korea
Correspondence to: Won Sang Yoo, MD, PhD, Department of Internal Medicine, Dankook University Medical College, 201 Manghyang-ro, Dongnam-gu, Cheonan 31116, Korea
Tel: 82-41-556-3063, Fax: 82-41-550-3056, E-mail: smff03@hanmail.net
Received April 9, 2018; Revised May 21, 2018; Accepted May 21, 2018.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
It is well known that the long-term prognosis of postpartum thyroiditis (PPT) is excellent except recurrent PPT in subsequent pregnancies and risk of progression to permanent hypothyroidism in some patients. However, the prospective observation of PPT patients who have neither consecutive gestation nor any evidence of hypothyroidism were limited. We describe three patients who have history of PPT and showed repeated painless thyroiditis in the span of more than ten years. The clinical courses of repeated painless thyroiditis were the transient thyrotoxicosis, self-limited, and not related to pregnancy. Based on the clinical courses of our three patients, it is recommended to remember that transient painless thyroiditis could be repeated as a possible long-term course of the patients with history of PPT.
Keywords : Postpartum thyroiditis, Long-term prognosis, Painless thyroiditis