Grade of gynaecomastia
| Grade or Type | Description | Severity |
| 1 | A localized button of tissue that is concentrated around the areola | Very mild |
| 2 | Moderate breast enlargement exceeding areola boundaries with edges that are indistinct from the chest |
Mild to high |
| 3 | Moderate breast enlargement exceeding areola boundaries with edges that are distinct from the chest with skin redundancy present |
High and visible |
| 4 | Marked breast enlargement with skin redundancy and feminization of the breast |
Severe and visibly feminine |