title: MRI appearances of an ectopic pituitary adenoma: case report and review of the literature.
abstract: MR images of an ectopic pituitary adenoma have been published in only a single case, a suprasellar mass. We present a patient with Cushing's disease in whom MRI revealed a pituitary adenoma within the sphenoid sinus. Radiologic characteristics of ectopic pituitary adenomas are reviewed, with emphasis on MRI, which demonstrates a soft tissue mass, isointense with gray matter on T1-weighted images, which enhances in a heterogeneous manner.
authors.affiliation: Department of Diagnostic Radiology, Lahey Clinic Medical Center, Burlington, Massachusetts 01805.
authors.forename: S M
authors.initials: SM
authors.lastname: Slonim
authors.forename: H A
authors.initials: HA
authors.lastname: Haykal
authors.forename: G W
authors.initials: GW
authors.lastname: Cushing
authors.forename: S R
authors.initials: SR
authors.lastname: Freidberg
authors.forename: A K
authors.initials: AK
authors.lastname: Lee
mesh_terms: D000182:ACTH Syndrome, Ectopic / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D000236:Adenoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000368:Aged; D002828:Choristoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010902:Pituitary Gland; D010911:Pituitary Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013101:Sphenoid Sinus / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed