The sonographical and functional sequelae of de Quervain's subacute thyroiditis: long-term follow-up.
Fifty-three patients with subacute thyroiditis (SAT) were seen during the acute stage of the disease. HLA-Bw 35 was positive in 33 out of 39 tested patients. At first presentation, all examined patients (N = 23) had ultrasound abnormalities (generalized hypodensity, single or multiple hypodense areas). Serum T4 and/or T3 were increased in 24/52, free T4 in 11/23, and the TSH response to TRH was flat in 8/11 patients. Six of 12 in whom volumetry was performed had goitres. Thirty-seven patients were re-examined after a mean follow-up interval of 46.5 months. At this follow-up, serum T4, free T4 and T3 levels as well as the sonographically determined thyroid volume had decreased, but there was still abnormalities by ultrasound detected in 14/36 patients; 19.4% had focal sonolucent lesions, whereas the prevalence of such lesions was only 3.1% in asymptomatic controls. Three patients were subclinically hypothyroid at the follow-up, whereas all others were euthyroid. Patients with abnormal ultrasound findings were of the same age and had a similar thyroid size, but a slightly higher TSH and a significantly (P less than 0.02) lower free T4 than those with normal ultrasound findings. They also had a higher prevalence of thyroid autoantibodies in low titres. Serum thyroglobulin was elevated in more than half of the patients during the acute phase, but only in 1 out of 11 patients during follow-up. Thyroglobulin at the follow-up was not related to TSH, but there was a correlation with thyroid volume (r = 0.57).(ABSTRACT TRUNCATED AT 250 WORDS)
Benker
G
G
Department of Clinical Endocrinology, University of Essen, FRG.
Olbricht
T
T
Windeck
R
R
Wagner
R
R
Albers
H
H
Lederbogen
S
S
Hoff
H G
HG
Reinwein
D
D
D000328:Adult; D001323:Autoantibodies / Q000032:analysis; D001799:Blood Sedimentation; D005260:Female; D005500:Follow-Up Studies; D006680:HLA Antigens / Q000032:analysis; D015797:HLA-B35 Antigen; D006801:Humans; D008297:Male; D008875:Middle Aged; D013954:Thyroglobulin / Q000097:blood; D013960:Thyroid Function Tests; D013963:Thyroid Hormones / Q000097:blood; D013968:Thyroiditis, Subacute / Q000097:blood / Q000175:diagnosis* / Q000276:immunology; D014463:Ultrasonography
D001323:Autoantibodies; D006680:HLA Antigens; D015797:HLA-B35 Antigen; D013963:Thyroid Hormones; D013954:Thyroglobulin