| Variables | Total = 235 N (%) | |
| Micro vasculararchitecture | Normal | 170 (71.9) 65 (27.7) |
| Altred | ||
| Capillary distribution | Regular | 230 (97.9) 5 (2.1) |
| Non homogenous | ||
| Capillary morphology | Homogenous | 231 (98.3) 4 (1.7) |
| Non homogenous | ||
| Capillary density | Normal | 231 (98.3) 4 (1.7) |
| Reduced | ||
| Sub-papillary venular plexus | Visible | 235 (100) 0 |
| Non visible | ||
| Efferent/Afferent limb ratio | Normal | 233 (99.1) 2 (0.9) |
| Increased | ||