Exercise #10
CT scan identified a non-glial tumor in the temporal lobe on October 1, 2004. The tumor was removed and final pathologic diagnosis was meningioma of the left temporal dura.
Reportability
Show Answer
Reportable: Yes
Primary site: C70.0 cerebral meninges
Histology: 9530/09 meningioma NOS
Meningioma, unless stated to be malignant, is a non-malignant tumor, and this case is reportable because it was diagnosed after January 1, 2004. The site is assigned to cerebral meninges because meningioma is a tumor of the meninges covering the brain, not of the temporal lobe itself. The reference is ICD-O-3, page 32, Rule H - "Use the topography code provided when a topographic site is not stated in the diagnosis. This topography code should be disregarded if the tumor is known to arise at another site".
