title: Cystic parathyroid adenomas on dynamic CT.
abstract: We have encountered 2 cases of parathyroid adenomas that are atypical because of their large size, cystic character, and faint enhancement compared with the typical solid parathyroid adenomas. Specifically, the enhancement pattern of a typical parathyroid adenoma in a multiphasic scan demonstrates rapid arterial enhancement and rapid washout on delayed imaging, whereas, comparatively, the 2 cystic parathyroid adenomas we encountered demonstrated less arterial phase enhancement and little washout on venous and delayed-phase imaging.
authors.affiliation: Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA. jdsillery@msn.com
authors.forename: J C
authors.initials: JC
authors.lastname: Sillery
authors.forename: D R
authors.initials: DR
authors.lastname: DeLone
authors.forename: K M
authors.initials: KM
authors.lastname: Welker
mesh_terms: D000368:Aged; D003537:Cystadenoma / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016896:Treatment Outcome