Pituitary macroadenoma and diaphragma sellae meningioma: differential diagnosis on MRI |
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| Authors: | P Cappabianca S Cirillo A Alfieri A D'Amico F Maiuri G Mariniello F Caranci E de Divitiis |
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| Institution: | (1) Istituto di Neurochirurgia, Universita' “Federico II”, via S. Pansini, 5, I-80131 Naples, Italy e-mail: cappabia@unina.it Tel.: +39-81-7 46 25 83 Fax: +39-81-7 46 24 97, IT;(2) Department of Neuroradiology, “Federico II” University School of Medicine, Naples, Italy, IT |
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| Abstract: | Diaphragma sellae meningiomas are unusual tumours often not distinguished from pituitary macroadenomas. Preoperative differentiation
is essential, because the trans-sphenoidal approach is used for surgical removal of adenomas, while meningiomas are approached
via a craniotomy. We reviewed five patients in whom a diaphragma sellae meningioma was initially diagnosed as a nonsecreting
pituitary macroadenoma. MRI criteria for differential diagnosis are discussed. The main findings considered are visibility
of the pituitary gland, contrast enhancement, the centre of the lesion and sellar enlargement. These criteria, applied to
a blind review, allow correct identification of the tumours.
Received: 10 September 1997 Accepted: 22 April 1998 |
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| Keywords: | Pituitary adenoma Meningioma diaphragma sellae Magnetic resonance imaging |
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