Mixed microcystic and angiomatous meningioma
Updates to Case Attributes
MRI demonstrates a large extraaxial right sided parafalcine mass which is isointense on T1, hyperintense on T2 with areas of attenuation on FLAIR consistent with cystic regions. Bright enhancement of the solid components are noted. The compressed adjacent brain demonstrated extensive oedema. Features most likely represent an atypical cystic meningioma.
Pathology
Final diagnosis
Falx cerebri,lesion, excision: Meningioma with microcystic and angiomatous features.
Microscopic Description:
Sectionsshow a moderately cellular neoplasm, attached to dura matter. There aremicrocystic changes and prominent vascularity, including both thick andthin-walled blood vessels. In some areas, tumour cells with regular oval nucleiand abundant eosinophilic cytoplasm form solid sheets. There are foci ofxanthomatous change and occasional cells associated with round eosinophilicglobules. Whorl formation is not evident. There are no atypical features and nobrain tissue is present to assess invasion.
-<p>MRI demonstrates a large extraaxial right sided parafalcine mass which is isointense on T1, hyperintense on T2 with areas of attenuation on FLAIR consistent with cystic regions. Bright enhancement of the solid components are noted. The compressed adjacent brain demonstrated extensive oedema. Features most likely represent an atypical<a href="/articles/cystic_meningioma" title="Cystic meningioma"> cystic meningioma</a>. This patient went on to have a craniotomy and resection of the mass. </p><h4>Pathology</h4><h5>Final diagnosis</h5><p>Falx cerebri,-lesion, excision: Meningioma with microcystic and angiomatous features.</p><h5>Microscopic Description: </h5><p>Sections-show a moderately cellular neoplasm, attached to dura matter. There are-microcystic changes and prominent vascularity, including both thick and-thin-walled blood vessels. In some areas, tumour cells with regular oval nuclei-and abundant eosinophilic cytoplasm form solid sheets. There are foci of-xanthomatous change and occasional cells associated with round eosinophilic-globules. Whorl formation is not evident. There are no atypical features and no-brain tissue is present to assess invasion.</p>- +<p>This patient went on to have a craniotomy and resection of the mass. </p><p>Pathology</p><p>Final diagnosis</p><p>Falx cerebri, lesion, excision: Meningioma with microcystic and angiomatous features.</p><p>Microscopic Description: </p><p>Sections show a moderately cellular neoplasm, attached to dura matter. There are microcystic changes and prominent vascularity, including both thick and thin-walled blood vessels. In some areas, tumour cells with regular oval nuclei and abundant eosinophilic cytoplasm form solid sheets. There are foci of xanthomatous change and occasional cells associated with round eosinophilic globules. Whorl formation is not evident. There are no atypical features and no brain tissue is present to assess invasion.</p>
Updates to Study Attributes
MRI demonstrates a large extraaxial right sided parafalcine mass which is isointense on T1, hyperintense on T2 with areas of attenuation on FLAIR consistent with cystic regions. Bright enhancement of the solid components are noted. The compressed adjacent brain demonstrated extensive oedema. Features most likely represent an atypical cystic meningioma.
Image MRI (T1 C+) ( update )
Image MRI (T2) ( update )
Image MRI (FLAIR) ( update )
Image MRI (T1 C+) ( update )
Image MRI (T1 C+) ( update )
Image MRI (T1) ( update )
