Table 4.

Patient demographics and specimen types for AAs with intravascular thrombosis and AAs without intravascular thrombosis. Abbreviations: AA = anaplastic astrocytoma; M = male; F = female.

	AA with intravascular thrombosis (n = 5)	AA without intravascular thrombosis (n = 41)
Age range (median)	30–89 (65.5)	9–89 (51.5)
M : F	1:4	1.9:1
Biopsy : resection	4:1	1.7:1
Primary : recurrence	4:1	3.6:1
Neuroimaging	T2‐hyperintense, mild to moderate contrast enhancement	T2‐hyperintense, mild to moderate contrast enhancement