scholarly journals Preoperative Evaluation of the Petrosal Vein With Contrast-Enhanced PRESTO Imaging in Petroclival Meningiomas to Establish Surgical Strategy

2013 ◽  
Vol 53 (7) ◽  
pp. 490-495 ◽  
Author(s):  
Hiroki MORISAKO ◽  
Takeo GOTO ◽  
Isao CHOKYU ◽  
Kenichi ISHIBASHI ◽  
Kenji OHATA
2018 ◽  
Author(s):  
Paola Parra Ramirez ◽  
Patricia Martin Rojas Marcos ◽  
Antonio Santiago Hernando ◽  
Arturo Lisbona Catalan ◽  
Alejandro Casto Calvo ◽  
...  

2005 ◽  
Vol 15 (9) ◽  
pp. 1790-1796 ◽  
Author(s):  
Alessandro Bozzao ◽  
Vanina Finocchi ◽  
Andrea Romano ◽  
Michele Ferrante ◽  
Fabrizio Fasoli ◽  
...  

2010 ◽  
Vol 67 (3) ◽  
pp. onsE309-onsE310 ◽  
Author(s):  
Paolo Ferroli ◽  
Francesco Acerbi ◽  
Morgan Broggi ◽  
Giovanni Broggi

Abstract BACKGROUND AND IMPORTANCE: To report on a single case of arteriovenous micromalformation (micro-AVM) of the trigeminal root that was diagnosed during microvascular decompression for trigeminal neuralgia with the use of indocyanine green (ICG) videoangiography. CLINICAL PRESENTATION: A 52-year-old woman with drug-resistant trigeminal neuralgia underwent a key hole suboccipital cerebellopontine angle exploration after the usual magnetic resonance imaging (MRI) screening had raised the suspicion of a vascular compression. In surgery, the petrosal vein was found to be bigger than usual and arterialized; the trigeminal root was embedded in a tangle of abnormal arterialized vessels. Intraoperative ICG videoangiography showed that the direction of flow in the arterialized petrosal vein was anterograde, thus allowing for the differential diagnosis between micro-AVM and tentorial dural fistula. It was possible to achieve only a partial nerve decompression because of the intimate relationship between the trigeminal root and the pathological vessels. Postoperative angiography and MRI with contrast administration confirmed the intraoperative diagnosis of micro-AVM. The patient was discharged neurologically intact on postoperative day 4. One month after surgery, she remains pain-free despite a 50% reduction in antiepileptic drugs. CONCLUSION: Surgeons performing microvascular decompression should be aware that a diagnosis of vascular compression based on MRI without contrast administration could not exclude the presence of a pontine micro-AVM. ICG videoangiography provides an elegant means of showing the flow dynamics of these pathological vessels. An MRI protocol that is suitable to avoid this kind of intraoperative drawback should be defined and systematically used in the preoperative evaluation of all such surgical candidates.


2019 ◽  
Vol 20 (1) ◽  
pp. 28-34
Author(s):  
Sitthiphan Limphanudom ◽  
Piyatida Boonsin

Lymphedema is a chronic disorder, defined as progressive and excessive accumulation of protein-rich fluid, inflammation and fibrosis in the interstitial space, resulting from impaired lymphatic drainage. It is vulnerable to misdiagnosis and has been badly reputed as an incurable disease. Nowadays, the lymphovenous anastomosis (LVA) is microsurgical technique for bypassing the obstructed segment of the lymphatic pathway into the venous system. MR lymphangiography (MRL) is an advance imaging technique using 3D volumetric contrast-enhanced MR angiography with high temporal and spatial resolution, which can evaluate both anatomy and function of the lymphatic system. It is a quick less invasive imaging technique, which aids in diagnosis, preoperative evaluation and follow up. For the experience and technical detail of MRL in PSU will be described in this article.


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