Table 2.

Classification of VTE events in pediatric HGG.

VTE type and location	Cases (n = 63)
DVT only	57 (90.5%)
Proximal lower extremity (femoral/iliac vein)	38 (66.7%)
Distal lower extremity (popliteal/tibial vein)	16 (28.1%)
Upper extremity veins	3 (5.3%)
PE	6 (9.5%)
PE with concurrent DVT	5 (83.3%)
Isolated PE (no DVT)	1 (16.7%)

VTE, venous thromboembolism; HGG, high grade giloma; DVT, deep vein thrombosis; PE, pulmonary embolism.