Asymmetries of the breast: a classification system.

The author proposes a new classification concerning asymmetry of the breast, based on 150 cases. Four main groups are evident, with 3 subgroups within each of them. The main groups are true malformative asymmetry of breast; precocious primary asymmetry of breast; secondary or progressive acquired breast asymmetry; and tertiary or induced breast asymmetry. Several examples of treated patients are illustrated, and some basic principles are elucidated, based on case histories.