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Annual number of Hashimoto's thyroiditis cases (dotted line) among the thyroidectomies (dashed line) performed at the Johns Hopkins Hospital between May 1889 and October 2012. The numbers of all surgical specimens processed by the Department of Pathology (solid line) is also shown. The arrow indicates year 1942, the time when the term “Hashimoto thyroiditis” was first used in a pathology report at this hospital.
