Fig. 4

The 3D images reconstructed by the micro-CT.(A) Mild hypospadias. (B) Severe hypospadias with good blood circulation. (C) Severe hypospadias with poor blood circulation. a The terminal branches originated from the deep layer of the penile dartos vessels formed an intact vascular ring and covered the glans. b Because of the ventral part prepuce defected, the deep layer vessels converge to form a half ring structure at the dorsal of the glans. c The severe hypospadias with insufficient blood circulation, which was absent of dominant vessels, the vascular ring was replaced by a network structure