Of increasing interest to both the pathologist and the surgeon is the relatively infrequent involvement of the thyroid gland commonly known as Riedel's struma. The condition is so named because Riedel was the first to describe it, in 1896.1 Hashimoto in 1912 described an involvement of the thyroid gland characterized by marked lymphocytic infiltration, to which he applied the term "struma lymphomatosa."2 After a study of cases under his observation Ewing3 came to the conclusion that Riedel's struma and struma lymphomatosa are different stages of the same disease, whereas other writers, especially Graham and his associates, maintained that they are two separate disease entities and in no way related.4 Graham expressed the belief that Riedel's struma more nearly approaches true inflammation than does the lesion described by Hashimoto. Some authors have declared it to be a nonspecific granulomatous inflammation.5 Struma lymphomatosa, on the other hand, is considered to be a
FOX N, MISSAL S. RIEDEL'S STRUMA. Arch Otolaryngol. 1941;33(3):384–390. doi:10.1001/archotol.1941.00660030388004
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