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Titolo:
MR imaging of pituitary morphology in idiopathic intracranial hypertension
Autore:
Yuh, WTC; Zhu, MW; Taoka, T; Quets, JP; Maley, JE; Muhonen, MG; Schuster, ME; Kardon, RH;
Indirizzi:
Univ Iowa, Coll Med, Dept Radiol, Iowa City, IA 52242 USA Univ Iowa Iowa City IA USA 52242 ed, Dept Radiol, Iowa City, IA 52242 USA
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 6, volume: 12, anno: 2000,
pagine: 808 - 813
SICI:
1053-1807(200012)12:6<808:MIOPMI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSEUDOTUMOR CEREBRI; EMPTY SELLA; AGE; CT;
Keywords:
idiopathic intracranial hypertension; pituitary morphology; magnetic resonance imaging; pituitary gland;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Yuh, WTC Univ Iowa, Coll Med, Dept Radiol, 0435 JCP,200 Hawkins Dr, Iowa City, IA 52242 USA Univ Iowa 0435 JCP,200 Hawkins Dr Iowa City IA USA 52242 2242 USA
Citazione:
W.T.C. Yuh et al., "MR imaging of pituitary morphology in idiopathic intracranial hypertension", J MAGN R I, 12(6), 2000, pp. 808-813

Abstract

The aim of this study was to investigate the morphologic changes of the pituitary gland in patients with the clinical diagnosis of idiopathic intracranial hypertension (IIH). Qualitative and quantitative analyses of pituitary morphology were performed in normal subjects (n = 23), patients with the clinical diagnosis of IIH (n = 40), and patients with acute increased intracranial pressure (AICP; n = 37) caused by acute head trauma. The loss of pituitary height (concavity) on the sagittal T1-weighted image was classifiedinto five categories: I = normal, II = superior concavity that was mild (<(1)/(3) the height of the sella), III = moderate (between (1)/(3) and (2)/(3) concavity of height of sells), IV = severe (> (2)/(3) concavity of height of sells), and V = empty sells. The area ratio of pituitary gland to sella turcica measured in the midsagittal plane was quantified. Clinical records were retrospectively reviewed to correlate with magnetic resonance (MR) findings. Using moderate concavity (> (1)/(3)) as the minimum criterion forabnormality, IIH patients had an 85% incidence of morphologic changes with80% sensitivity and 92% specificity. Empty sells (almost complete concavity of the sella) was found in only 2.5% of patients with IIH. Quantitative analysis of the pituitary gland/sella turcica area ratio showed a significant decrease in patients with IIH (P < 0.0001) but no significant difference between the normal subjects and AICP patients. A posterior deviation of thepituitary stalk was seen in 43% of patients. No enlargement of the ventricles or sulcal effacement was seen in IIH patients. Routine brain MR examination of patients with IIH frequently shows morphologic changes of the pituitary gland ranging from various degrees of concavity to (rarely) the extreme case of an empty sella. The etiology is unknown and may be related to theseverity and duration of elevated CSF pressure. Such findings may be useful to facilitate the diagnosis of IIH, particularly in patients with equivocal clinical findings or when IIH is not suspected. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:35:20