The purpose of categorizing the different gynecomastia types is to determine which treatment is best.
Gynecomastia is classified into 4 grades by the American Society of Plastic Surgeons based on factors like size of breast enlargement and feminization of the breast. Grade 1 is considered mild and the highest grade of 4 is considered severe with noticeable feminization of the male chest. The table below shows each grade and its description.
|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|