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A: Coronal T2-weighted MRI showed an extra-axial tumor (white arrow) in the high-convexity region. B: Right external carotid artery angiography (ECAG) showed the tumor feeding from the right MMA (white arrowhead) and right STA (white arrow). C: Left ECAG showed the tumor feeding from the left MMA (black arrowhead). D: Bilateral STAs were anastomosed and flowed into the tumor through the parietal foramen (black arrow) on three-dimensional CTA.
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BACKGROUND
In meningiomas that occur in the high-convexity region, the superficial temporal artery (STA) frequently feeds the tumor, and when embolizing from the middle meningeal artery (MMA), the embolic material may not reach the tumor vessels because of the pressure gradient resulting from the STA blood flow, resulting in inadequate embolization...
Contexts in source publication
Context 1
... region that was being followed up by his previous hospital. Because the neoplastic lesion had increased in size over the past 6 years, the patient was referred to our hospital. The patient was asymptomatic with no neurological deficit. Head MRI showed a 2.2-cm neoplastic lesion with a dural tail sign in the right frontal highconvexity region (Fig. 1A). Digital subtraction angiography (DSA) showed that the middle internal frontal artery, posterior internal frontal artery, bilateral MMAs, and bilateral STAs were feeding the tumor ( Preoperative computed tomography angiography (CTA) showed that the bilateral STAs were anastomosed subcutaneously and connected to the dural artery via the ...
Context 2
... (DSA) showed that the middle internal frontal artery, posterior internal frontal artery, bilateral MMAs, and bilateral STAs were feeding the tumor ( Preoperative computed tomography angiography (CTA) showed that the bilateral STAs were anastomosed subcutaneously and connected to the dural artery via the left parietal foramen, feeding the tumor (Fig. 1D). We decided to perform preoperative embolization followed by tumor resection to soften the tumor, facilitate internal decompression, and interrupt pial feeder from deep within the ...
