Diffuse low grade astrocytoma (grade II) with intraventricular extension.
Partial resection of the tumor was performed.
The sections show features of a moderately cellular astrocytic tumor. The tumor cells have slightly elongated and hyperchromatic nuclei with a microcystic background. 2 mitoses are seen within the entire tumor. No microvascular proliferation is present. One hypocellular fragment is necrotic, which may be related to previous surgery, rather than being tumor cell necrosis.