title: Primary schwannoma of the thyroid gland presenting as an asymptomatic cold nodule.
abstract: Schwannomas are benign neoplasms that may arise from Schwann cells of the nerve sheath all over the body. Although schwannomas of the head and neck region are common, the thyroid gland is a rare site for schwannomas, with little documentation in the literature. Presented is a case of a 57-year-old woman who was evaluated in our outpatient clinic for hypothyroidism because of Hashimoto thyroiditis. Thyroid ultrasound revealed a single prominent nodule, which was cold on technetium Tc 99m thyroid scan. Fine needle aspiration of the nodule had aroused suspicion for malignant thyroid neoplasm. Complete thyroidectomy was undertaken without complications. Microscopic examination and immunohistochemical stains supported the diagnosis of a primary thyroid schwannoma.
authors.affiliation: Bruce Rappaport Faculty of Medicine, Department of Surgery A, Carmel Medical Center, The Technion-Israel Institute of Technology, Haifa, Israel. ofiruri@gmail.com
authors.forename: Ofir
authors.initials: O
authors.lastname: Uri
authors.forename: Elzbieta
authors.initials: E
authors.lastname: Baron
authors.forename: Oleg
authors.initials: O
authors.lastname: Lefel
authors.forename: Arie
authors.initials: A
authors.lastname: Bitterman
mesh_terms: D001707:Biopsy, Needle; D003937:Diagnosis, Differential; D005260:Female; D006044:Goiter, Nodular / Q000000981:diagnostic imaging; D050031:Hashimoto Disease / Q000000981:diagnostic imaging; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D009442:Neurilemmoma / Q000000981:diagnostic imaging* / Q000601:surgery; D015609:Organotechnetium Compounds; D011877:Radionuclide Imaging; D013961:Thyroid Gland / Q000473:pathology* / Q000601:surgery; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D016606:Thyroid Nodule / Q000000981:diagnostic imaging / Q000601:surgery; D013965:Thyroidectomy
chemical_list: D015609:Organotechnetium Compounds