RT Book, Section A1 Fitzgerald, Paul A. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. A2 McQuaid, Kenneth R. SR Print(0) ID 1184696955 T1 Thyroiditis T2 Current Medical Diagnosis & Treatment 2022 YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264269389 LK accessmedicine.mhmedical.com/content.aspx?aid=1184696955 RD 2024/03/28 AB ESSENTIALS OF DIAGNOSISAutoimmune thyroiditisChronic lymphocytic (Hashimoto) thyroiditis is the most common thyroiditis and often progresses to hypothyroidism.Postpartum thyroiditis and subacute lymphocytic thyroiditis (silent thyroiditis) can cause transient hyperthyroidism due to passive release of stored thyroid hormone.Thyroid peroxidase antibodies (TPO Ab) or thyroglobulin antibodies (Tg Ab) are usually high.Painful subacute thyroiditis (de Quervain thyroiditis)Hallmark is tender thyroid gland with painful dysphagia.Elevated erythrocyte sedimentation rate (ESR).Viral etiology. Antithyroid antibodies are absent or low, distinguishing it from autoimmune thyroiditis.Infectious (suppurative) thyroiditisSevere, painful thyroid gland.Febrile with leukocytosis and elevated ESR.IgG4-related thyroiditis (Riedel thyroiditis)Most often in middle age or older women.Usually part of a systemic fibrosing syndrome.