Riedel's thyroiditis is a rare disorder of unknown etiology and may be seen isolated or as a part of multifocal fibrosclerosis. It is important to distinguish Riedel's thyroiditis from thyroid carcinoma. Reports about imaging features of Riedel's thyroiditis are limited in the radiologic literature. We describe herein CT and MR imaging features of Riedel's thyroiditis in a case of multifocal fi...

Thyroidal 99mTc uptake in the acute thyrotoxic phase of subacute thyroiditis (SAT) is always inhibited. However, a patient with SAT had signs in the right-side thyroid gland with transient thyrotoxicosis and slightly high 99mTc uptake levels in the right lobe, low 99mTc uptake in the left lobe, and normal overall uptake. Histological examination showed cellular destruction and granulomatous inf...

Riedel's thyroiditis is a rare inflammatory disease of the thyroid gland and has been reported in 0.05% of thyroid surgeries. Herein we report two cases of Riedel's thyroiditis with variable clinical presentations. One of these cases was a 51-year-old man who was presented with hypothyroidism and the other a 17-year-old young male with thyrotoxicosis. In these cases, age may be a determining fa...

概要 原発 性胆 汁性肝硬 変(P3C)にmonoclonal gammopathや 多発性 骨髄 腫 の合併 は まれ で あ るが,無 症 候性PBCに 多発性骨髄 腫 を合併 し,そ の後原 発姓 甲状腺機 能低 下症 を発症 した 70才 女性 を経 験 した.三 老の ほ ぼ平 行 した増 悪 と治 療 に よ る改 善 が み られ,ス テ ロイ ド薬 と cyclophosphamideに よる化学療 法で骨髄像,血 中 γ・グ ロブ リン値 の改善 に伴 って抗 ミ トコ ン ドリア抗体 価,血 中IgM,ア ル カ リフォス フ ァターゼ値,抗 マ イク ロゾーム抗体 価 は著 明 に低 下,同 時 に血 中TSH binding inhibitor immunoglobulinの 改善 を伴 って甲状 腺機能 も正 常化 した.本 例 にお ける これ ら三 つの...

Riedel's thyroiditis is an extremely rare disease that is difficult to diagnose correctly using preoperative diagnostic tools because it can mimic malignant neoplasm or the fibrous variant of Hashimoto thyroiditis during preoperative physical, radiologic, and pathologic examination. We describe here a rare case of Riedel's thyroiditis in an elderly patient and its radiologic characteristics.

OBJECTIVE To gain an insight into risk factors for hypothyroidism after subacute thyroiditis (SAT), we examined the correlation between initial laboratory and ultrasonographic findings and sequential thyroid dysfunction among treatment modalities. PATIENTS We reviewed retrospectively the medical records of 252 patients (26 men and 226 women) with SAT who consecutively visited our thyroid clin...

Experimental allergic thyroiditis produced in strain 13 histocompatible guinea pigs after a single immunization with thyroid extract and Freund's adjuvant was followed for more than 2 years. The disease appeared as early as 5 days and persisted for the entire period studied, although it regressed in the later stages. Circulating antithyroid antibody was detected at low levels as early as 7 days...