Difference between revisions of "Neuropathology tumours"

Neuropathology tumours (view source)

152 bytes added , 17:49, 4 November 2010

→‎Meningioma: fix classification

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 **Low mitotic rate.
 *Grade 2:
-**Intermediate mitotic rate (>= 4 mitoses/HPF - for whatever ''HPF'' means, see [[HPFitis]].)
+**Brain-invasive meningioma.
-**Three of the following five features:
+***Protrusion of meningioma into brain.
-**#Sheeting architecture.
+****Meninogioma with entraped GFAP +ve tissue.
-**#High NC ratio; clusters of "lymphocyte-like" cells.
+**Atypical meningioma.
-**#Hypercellularity.
+***Intermediate mitotic rate (>= 4 mitoses/10 HPF - for whatever ''HPF'' means, see [[HPFitis]].)
-**#Macronucleoli.
+***Three of the following five features:
-**#Necrosis not caused by treatment, e.g. radiation or embolization.
+***#Sheeting architecture.
+***#High NC ratio; clusters of "lymphocyte-like" cells.
+***#Hypercellularity.
+***#Macronucleoli.
+***#Necrosis not caused by treatment, e.g. radiation or embolization.
 *Grade 3:
-**High mitotic rate (>=20 mitoses/HPF - for whatever ''HPF'' means, see [[HPFitis]].)
+**High mitotic rate (>=20 mitoses/10 HPF - for whatever ''HPF'' means, see [[HPFitis]].)
 **"Frank anaplasia"; marked nuclear atypia.