Answer:
A. Examine pertinent anatomic features
- asymmetry
- relations of the thorax length to trunk (long vs short-waisted)
- shape of the thorax
- patient height
B. Various methods have been proposed to predict the appropriate size
- placing unsterile implants or plastic bags fillled with water into a bra of the patient's desired size
- sophiscticated volume displacement devices and precast forms
- Tebbetts biodimensional approach: transverse and vertical diameters of the existing breasts are measured and the desired projection is factored in. These three values are then entered into a table to calculate the correct implant size.