Spoke wheel sign (meningioma)
Updates to Article Attributes
The spoke wheel sign refers to the pattern of vessels coursing through meningiomas, when seen in cross-section. It is the result of the same phenomenon which results in the sunburst pattern (vessels seen from the side rather than in cross section).
Terminology
A similar appearance also referred to as a spoke wheel sign may also be seen in renal tumours (e.g. oncocytoma) - see spoke wheel vascularity - kidney.
Pathology
The vascular supply of meningiomas is often both dural and pial. Pial branches usually supply the innermost part of the tumour but arterial feeders to the pedicle at the site of dural attachment and centre of the lesion typically arise from branches of the external carotid artery and in particular middle meningeal artery.
Radiographic features
The feeder arterial branches diverging radially into the lesion; this gives the appearance of a spoke wheel on T2 weighted or post contrast images, or during angiography.
-<p>The <strong>spoke wheel sign</strong> refers to the pattern of vessels coursing through <a href="/articles/meningioma">meningiomas</a>, when seen in cross-section. It is the result of the same phenomenon which results in the <a href="/articles/sunburst-sign-meningioma">sunburst pattern</a> (vessels seen from the side rather than in cross section).</p><h4>Terminology</h4><p>A similar appearance also referred to as a spoke wheel sign may also be seen in renal tumours (e.g. <a href="/articles/renal-oncocytoma">oncocytoma</a>) - see <a href="/articles/spoke-wheel-pattern-in-kidney">spoke wheel vascularity - kidney</a>.</p><h4>Pathology</h4><p>The vascular supply of meningiomas is often both dural and pial. Pial branches usually supply the innermost part of the tumour but arterial feeders to the pedicle at the site of dural attachment and centre of the lesion typically arise from branches of the external carotid artery and in particular middle meningeal artery.</p><h4>Radiographic features</h4><p>The feeder arterial branches diverging radially into the lesion; this gives the appearance of a spoke wheel on T2 weighted or post contrast images, or during angiography.</p>- +<p>The <strong>spoke wheel sign</strong> refers to the pattern of vessels coursing through <a href="/articles/meningioma">meningiomas</a>, when seen in cross-section. It is the result of the same phenomenon which results in the <a href="/articles/sunburst-sign-meningioma-1">sunburst pattern</a> (vessels seen from the side rather than in cross section).</p><h4>Terminology</h4><p>A similar appearance also referred to as a spoke wheel sign may also be seen in renal tumours (e.g. <a href="/articles/renal-oncocytoma">oncocytoma</a>) - see <a href="/articles/spoke-wheel-pattern-in-kidney">spoke wheel vascularity - kidney</a>.</p><h4>Pathology</h4><p>The vascular supply of meningiomas is often both dural and pial. Pial branches usually supply the innermost part of the tumour but arterial feeders to the pedicle at the site of dural attachment and centre of the lesion typically arise from branches of the external carotid artery and in particular middle meningeal artery.</p><h4>Radiographic features</h4><p>The feeder arterial branches diverging radially into the lesion; this gives the appearance of a spoke wheel on T2 weighted or post contrast images, or during angiography.</p>
Tags changed:
- snippet title
Unable to process the form. Check for errors and try again.