title: MRI of pituitary adenomas: the position of the normal pituitary gland.
abstract: The position of the normal pituitary gland, assessed using gadolinium - enhanced MRI was compared with the position found at surgery for pituitary adenoma in 25 patients. The tumours were five microadenomas and 20 macroadenomas. Using T1-weighted imaging, the anterior lobe could be differentiated on the sagittal image in five patients (20%) and on the coronal image in four (16%). The high intensity of the posterior lobe could be differentiated using T1-weighted sagittal imaging in 13 patients (52%). The normal pituitary gland, which enhanced more strongly than tumour, could be differentiated using Gd-DTPA-enhanced MRI on the sagittal images in 22 cases (88%) and on the coronal image in 17 (68%). In seven patients, the normal pituitary gland surrounded the tumour; it was displaced superiorly in 14 cases and superioposterorly in two but in no case was it displaced anteriorly or downwards.
authors.affiliation: Department of Neurosurgery, Hiroshima University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Sumida
authors.forename: T
authors.initials: T
authors.lastname: Uozumi
authors.forename: K
authors.initials: K
authors.lastname: Mukada
authors.forename: K
authors.initials: K
authors.lastname: Arita
authors.forename: K
authors.initials: K
authors.lastname: Kurisu
authors.forename: T
authors.initials: T
authors.lastname: Yano
authors.forename: J
authors.initials: J
authors.lastname: Onda
authors.forename: H
authors.initials: H
authors.lastname: Satoh
authors.forename: F
authors.initials: F
authors.lastname: Ikawa
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D000324:Adrenocorticotropic Hormone / Q000378:metabolism; D003287:Contrast Media; D003937:Diagnosis, Differential; D019786:Gadolinium DTPA; D013006:Growth Hormone / Q000378:metabolism; D006801:Humans; D007016:Hypophysectomy; D008279:Magnetic Resonance Imaging; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D010902:Pituitary Gland / Q000378:metabolism / Q000473:pathology*; D010911:Pituitary Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D015175:Prolactinoma / Q000175:diagnosis / Q000378:metabolism / Q000601:surgery; D012016:Reference Values; D013972:Thyrotropin / Q000378:metabolism
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D000324:Adrenocorticotropic Hormone; D013972:Thyrotropin; D013006:Growth Hormone; D019786:Gadolinium DTPA