Morphometric study of microvessels in primary CNS tumors and its correlation with tumor types and grade

► Microvessel characteristics correlated with type and grade of primary CNS tumors. ► CNS tumors exhibited positive correlation with various microvessel parameters. ► Percentage of total microvessel cross-sectional area (%TVCSA) had the best correlation. ► Multiple regression of microvessel parameters (S2 score) gave best correlation with grade. ► Microvessel morphometry provides insight into malignant progression of brain tumors.