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Squamous metaplasia with Hashimoto's thyroiditis presenting as a thyroid nodule
Author(s) -
Kobayashi Tetsuro,
Okamoto Shigeru,
Maruyama Hirohide,
Okamura Jun,
Takai ShinIchiro,
Mori Takesada
Publication year - 1989
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/jso.2930400216
Subject(s) - medicine , nodule (geology) , thyroiditis , thyroid , pathology , squamous metaplasia , metaplasia , connective tissue , squamous carcinoma , hashimoto disease , carcinoma , epithelium , biology , paleontology
A 59‐year‐old Japanese female presented a well‐limited and movable thyroid nodule. Histologically, the nodule consisted of clusters of squamous cells surrounded by dense connective tissue in Hashimoto's thyroiditis. The squamous cells were well arranged and showed no mitotic figures. We therefore interpreted this nodule as being squamous metaplasia with Hashimoto's thyroiditis rather than squamous carcinoma of the thyroid. There are no previous reports in the literature of nodular formation of squamous metaplasia in the thyroid.