Table 2.

Intravascular thrombosis in CNS malignancies. Only resection specimens from newly diagnosed neoplasms are shown. Abbreviations: CNS = central nervous system; HPF = high power field; PCNSL = primary central nervous system lymphoma.

CNS Malignancy	Number of primary resection specimens	Intravascular thrombosis (%)	Number of involved vessels mean ± SEM (range)	Mean number of involved vessels/10HPF (range)
Glioblastoma	60	92	21.0 ± 2.2 (1–60)	1.8 ± 0.2 (0.3–6.0)
Anaplastic Astrocytoma	11	0*	0	0
Diffuse Astrocytoma	4	0*	0	0
Anaplastic Oligodendroglioma	4	25*	6	6 (0.6)
Oligodendroglioma	8	0*	0	0
Metastatic carcinoma	49	10*	16.4 ± 8.9 (2–50)	1.6 ± 0.9 (0.5–5)
PCNSL	31	6*	15 ± 5 (7–20)	1.3 ± 0.3 (1.0–1.5)
Medulloblastoma	20	15*	10 ± 2.9 (5–20)	0.8 ± 0.2 (0.3–1.0)

^* P < 0.05, χ²‐test, with comparison with glioblastoma.