title: "Fish-eye sign" in scintigraphy of benign thyroid nodule.
abstract: An unusual scintigraphic appearance of a benign adenomatous nodule in the thyroid is described which showed a central core of functional tissue surrounded by a rim of nonfunctioning tissue and degenerative changes. The descriptive term "fish-eye sign" is proposed. The characterization of tissue by scintigraphy prior to fine needle aspiration may be helpful in its interpretation.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D011877:Radionuclide Imaging; D013667:Technetium; D013959:Thyroid Diseases / Q000000981:diagnostic imaging*; D013961:Thyroid Gland / Q000000981:diagnostic imaging*
chemical_list: D013667:Technetium