Purpose: To evaluate the preoperative MRI criteria of a sinus cavernous invasion by a pituitary
adenoma. Material and Methods: Study of 102 cavernous sinuses among 51 patients who had had a surgical cure of pituitary
adenoma. Thirteen patients had gical invasion of the cavernous sinus. Results: A certain number of signs eliminated cavernous sinus invasion. The best means consisted
of not crossing the intercarotid line [Sensitivity (Se} = 100%, Specificity (Sp) =
85% and Negative Predictive Value (NPV) = 100%]. The others means implied: not going
past twelve o’clock on the internal carotid artery-ICA (NPV = 97.1%), symmetrical
size of the cavernous sinus (NPV = 92.5%), non-convexity of the lateral wall (NPV
= 90.2%), visualization of at least two venous groups of the laterosellar space (NPV
= 90.2%) and finally, non-displacement of the ICA (NPV = 89.2%). The best criteria
for diagnosis were passing by the intra and supracavernous ICA lateral tangent (Se
= 84.6%, Sp = 95%) and the percentage of ICA encasement by the adenoma exceeding 25%
(Se = 92.3%, Sp = 85%). Conclusion: Except the total encasement of the intracavernous ICA, the cavernous sinus can be
invaded when the lateral tangent of the supra and the intracavernous ICA is crossed,
and also when the percentage of ICA encasement exceeds 25%.
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Clinical ImagingAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
Article info
Publication history
J Radiol 1998;79:241–246
Identification
Copyright
© 1998 Published by Elsevier Inc.
