[MRI imaging of the neural pituitary].
The main illness of the neural pituitary is diabetes insipidus (DI). MRI is essential if DI occurs during childhood, in order to highlight malignant germinoma prognosis of which remains excellent if the diagnosis is made as early as possible. In adults, primary intracranial tumours causing DI include craniopharyngioma, or pineal tumours. Infiltrative histiocytosis is another frequent aetiology. One third of previously considered idiopathic DI is in fact auto-immune. Early MRI findings advocate for such a diagnosis. Finally, meticulous analysis of the neural pituitary imaging may avoid several pitfalls and help the analysis of adenopituitary abnormalities.
Antoine
V
V
Service de neuroradiologie, CHU de Nancy, hôpitaux de Brabois, rue du Morvan, 54500 Vandoeuvre-lès-Nancy, France.
Moret
C
C
Schmitt
E
E
Klein
M
M
Bracard
S
S
D000236:Adenoma / Q000473:pathology; D001932:Brain Neoplasms / Q000473:pathology; D002648:Child; D003397:Craniopharyngioma / Q000473:pathology*; D003919:Diabetes Insipidus / Q000175:diagnosis / Q000473:pathology*; D018237:Germinoma / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D018242:Neuroectodermal Tumors, Primitive / Q000473:pathology; D010904:Pituitary Gland, Posterior / Q000033:anatomy & histology / Q000473:pathology*; D010911:Pituitary Neoplasms / Q000473:pathology*