| Characteristics | Distance between nipple position and inframammary fold | Surgical Method | Lift Technique | Improvement |
|---|
| Normal | ㅡ | ㅡ | Breast augmentation | ㅡ | Increased volume |
| Grade 1 | Mild sagging *In some cases, breast augmentation alone may be sufficient | Within 1 cm | Breast augmentation or Breast augmentation + lift | Crescent incision | Improved volume, lifted areola position |
| Grade 2 | Noticeable sagging and change in breast shape | Within 1–3 cm | Breast augmentation + lift | Vertical incision | Restores hollowness, lifts tissue that has descended |
| Grade 3 | Severe sagging with the entire breast shifted downward | 3 cm or more | Breast augmentation + lift | Vertical incision or anchor (inverted-T) incision *The anchor incision is mainly used when the inframammary fold has also changed position. | Restores hollowness, overall lift of tissue that has shifted downward |
| Pseudoptosis | Sagging present, but areola position is normal | ㅡ | Breast augmentation | ㅡ | Restores lost upper-pole volume |