title: Autoimmune thyroiditis with transient thyrotoxicosis: comparison between painful thyroiditis and painless thyroiditis.
abstract: Clinical and laboratory findings and long-term outcomes in 8 patients (7 women) with autoimmune thyroiditis (AT), aged 34-59 years, who had a painful tender goiter and a transient thyrotoxicosis with a low thyroid radioactive iodine uptake (RAIU), were compared with those in 15 patients (13 women) with painless thyroiditis (PT), aged 23-69 years. Six painful AT and 6 PT patients had a history of prior awareness of goiter. All patients with painful AT had a moderate or marked elevation of erythrocyte sedimentation rate and a positive result for C-reactive protein, while only 3 PT patients (group B) did. There were no significant differences between the mean age, duration of symptoms, white blood cell count, serum triiodothyronine (T3) and thyroxine (T4) concentrations, serum T3/T4 ratio and duration of thyrotoxicosis after the initial examination and prevalences of positive results for antithyroglobulin and -microsomal antibodies in the two diseases. Two of 8 painful AT patients showed a histologically chronic fibrous variant and 6 others showed chronic lymphocytic thyroiditis. All PT patients examined also showed lymphocytic thyroiditis. Two and 5 painful AT patients developed transient and persistent hypothyroidism, respectively, while 8 [7 in group A (normal ESR), 1 in group B] and 3 PT patients (1 in group A, 2 in group B) did, respectively. The mean serum thyroid-stimulating hormone level in the hypothyroid phase in painful AT patients was higher than that in PT patients.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: First Department of Internal Medicine, Tottori University School of Medicine, Yonago, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Shigemasa
authors.forename: T
authors.initials: T
authors.lastname: Kouchi
authors.forename: S
authors.initials: S
authors.lastname: Taniguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Mitani
authors.forename: Y
authors.initials: Y
authors.lastname: Ueta
authors.forename: A
authors.initials: A
authors.lastname: Yoshida
authors.forename: H
authors.initials: H
authors.lastname: Mashiba
mesh_terms: D000328:Adult; D000368:Aged; D001323:Autoantibodies / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology*; D013960:Thyroid Function Tests; D013961:Thyroid Gland / Q000473:pathology; D013967:Thyroiditis, Autoimmune / Q000150:complications* / Q000473:pathology / Q000503:physiopathology; D013971:Thyrotoxicosis / Q000150:complications* / Q000473:pathology / Q000503:physiopathology; D013972:Thyrotropin / Q000097:blood
chemical_list: D001323:Autoantibodies; C006606:anti-thyroglobulin; C056626:thyroid microsomal antibodies; D013972:Thyrotropin