Anatomical Variations of the Circulus Arteriosus in Cadaveric Human Brains

Table 9

Comparison of size of PoCoA.

Variation type	Adult type %	Foetal type %
Present study	77.33	18
de Vriese [7]	58	—
Riggs and Rupp [14]	76	17
Merkkola et al. [32]	50	—
Saeki and Rhoton [33]	70	30
Zeal and Rhoton[34]	58	40
Eftekhar et al. [35]	—	27