| Heart cavities Topography | Left atrium | Left ventricle | Right atrim | Right ventricle | Total |
| Free wall | 2 | 0 | 0 | 1 | 3 |
| Septal wall | 15 | 0 | 5 | 0 | 20 |
| Atrio-ventricular valve (atrial or ventricular side) | 4 | 0 | 0 | 0 | 4 |
| Total | 21 | 00 | 5 | 1 | 27 |