title: Acute exacerbation of masked hyperthyroidism after iodine restriction followed by thyrotoxic atrial fibrillation and cerebral embolism. A case report.
abstract: The authors present a seventy-two-year-old woman complaining of diffuse and firm goiter. At the first visit, she looked almost euthyroid with regular pulse rate of 78 per minute. After iodine restriction, however, she became severely thyrotoxic and developed cerebral embolism associated with atrial fibrillation due to Graves' hyperthyroidism. In conclusion, sudden withdrawal of dietary iodine might lead to exacerbation of Graves' hyperthyroidism resulting in serious cardiovascular or cerebrovascular complications, especially in elderly patients.
authors.affiliation: Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kuroda
authors.forename: K
authors.initials: K
authors.lastname: Okamura
authors.forename: K
authors.initials: K
authors.lastname: Sato
authors.forename: K
authors.initials: K
authors.lastname: Inokuchi
authors.forename: T
authors.initials: T
authors.lastname: Mizokami
authors.forename: M
authors.initials: M
authors.lastname: Fujishima
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000209:etiology*; D005260:Female; D006111:Graves Disease / Q000150:complications*; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology*; D013971:Thyrotoxicosis / Q000150:complications*; D014057:Tomography, X-Ray Computed