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Original Contributions
March 28, 1964

Morphologic Evidence of Thyroiditis in Myasthenia Gravis

Author Affiliations

Rochester, Minn

Assistant to the staff and from the Section of Medicine (Dr. Becker), Section of Experimental and Anatomic Pathology (Dr. Titus), Section of Medicine (Dr. McConahey), and Section of Surgical Pathology (Dr. Woolner), Mayo Clinic and Mayo Foundation.

JAMA. 1964;187(13):994-996. doi:10.1001/jama.1964.03060260022004

The thyroid glands were studied morphologically in 32 patients with myasthenia gravis on whom autopsies had been performed. In six instances (approximately 19% of cases), changes suggestive of thyroiditis were observed, while in a large control group the incidence of such thyroid changes was 0.9%. The finding suggests that a basic relationship may exist between these conditions.