1. 24 Conclusions: chest roentgenogram can pwride diagnostic clues, CT, MRI and angiocardiorahy had confirmatory diagnostic value in the diagnosis of UAPA.

2. 24 Objective To discuss the significance of stress roentgenogram on diagnosis of chronic instability of lateral ankle and. bring forward the radiology diagnosis criteria.

3. These rare circumstances permit to compare both uniovular twins in analysing their cephalometric roentgenograms and to ascertain the changes produced in the upper and the lower jaw, in the upper and the lower alveolar arch, by the influence of the activator.