title: Riedel thyroiditis: Fine needle aspiration findings of a rare entity.
abstract: Riedel thyroiditis is a rare fibrosing disorder characterized by extension of the fibroinflammatory process beyond the thyroid capsule. Due to the nature of this lesion, fine-needle aspiration often yields scant material and may be interpreted as non-diagnostic. In this report, we describe cytologic features that allow the cytopathologist to favor a diagnosis of Riedel thyroiditis, thereby guiding appropriate further work-up and management.
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: Anna-Sophie
authors.initials: AS
authors.lastname: Weidner
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: David
authors.initials: D
authors.lastname: Molina
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: Robert A
authors.initials: RA
authors.lastname: DeSimone
authors.affiliation: Department of Otolaryngology, Weill Cornell Medical College, New York, New York.
authors.forename: Marc A
authors.initials: MA
authors.lastname: Cohen
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: Tamar
authors.initials: T
authors.lastname: Giorgadze
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: Theresa
authors.initials: T
authors.lastname: Scognamiglio
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York.
authors.forename: Rana S
authors.initials: RS
authors.lastname: Hoda
mesh_terms: D044963:Biopsy, Fine-Needle; D006801:Humans; D007249:Inflammation / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D013961:Thyroid Gland / Q000473:pathology*; D013966:Thyroiditis / Q000175:diagnosis* / Q000473:pathology
keywords: Riedel thyroiditis; fine-needle aspiration