4990 Images   :   Last WebSite Update: Wednesday, October 08, 2014
Follow us:     
 
advertisement


Meningithelial Meningioma

slide 17 of 60


Comments:
Loss of lobularity or a phenomenon known as "sheeting" is a common feature of atypical meningiomas; however, other criteria need to be fulfilled in order to upgrade these tumors. The picture portrays a meningothelial meningioma with loss of lobularity. Sheets of pink meningothelial cells are intersected by fibrovascular septae. Sometimes different histologic patterns of meningiomas coexist simulataneously within a tumor. They have been designated as “mixed meningioma”. Mitotic activity is not seen in this picture.

slide 17 of 60