title: SPECT/CT demonstrating 131I retention in Warthin tumor on thyroid cancer survey scan.
abstract: A 48-year-old male patient of papillary thyroid cancer, status post-thyroidectomy and node dissection, was referred to (131)I scan prior to radioiodine treatment. The images showed 1 additional focus of (131)I uptake in the right upper neck outside of the thyroid bed. SPECT/CT demonstrated 2 separate foci of radioiodine uptake in the right parotid gland, instead of neck lymph nodes. Diagnostic CT showed 2 corresponding soft tissue nodules in the right parotid gland which were confirmed latter by fine-needle aspiration to be Warthin tumors. This case illustrates a pivotal role of SPECT/CT in differential diagnosis of abnormal neck uptake on (131)I thyroid cancer scan.
authors.affiliation: Department of Radiology, University of Washington, Seattle, WA, USA.
authors.forename: Yuyang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Satoshi
authors.initials: S
authors.lastname: Minoshima
mesh_terms: D000235:Adenolymphoma / Q000000981:diagnostic imaging*; D006801:Humans; D007457:Iodine Radioisotopes; D008197:Lymph Node Excision; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D013965:Thyroidectomy; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed
chemical_list: D007457:Iodine Radioisotopes