Fat grafting breast augmentation offers a natural, soft, and elegant result using your own fat.

However, the maximum safe volume increase in one session is around two cup sizes.

Injecting excessive amounts — such as over 400cc per side, or forcing fat into areas with tight skin — significantly increases the risk of fat necrosis and lump formation.

At AVAN TOKYO GINZA LIPOSUCTION CLINIC, we perform each fat grafting procedure with the highest attention to safety and aesthetic precision, focusing on long-term natural beauty rather than excessive short-term volume.

Types and Causes of Lumps

Fat grafting–related lumps generally fall into three categories:

1. Fat Necrosis:
   When injected fat fails to establish blood supply and hardens. Sometimes calcification occurs.
2. Oil Cyst:
   Liquefied fat trapped under the skin, which can occasionally be drained with a syringe.
3. Fibrosis:
   The healing process forms firm tissue, which usually softens gradually over time.

Even with perfect technique, lump formation can occasionally occur, as the human body’s response varies.

How to Minimize Lump Formation

Our clinic employs a series of advanced methods to reduce complications and maximize fat survival:

• Multi-layer injection: Injecting small amounts into multiple layers (subcutaneous, subglandular, subfascial) to improve fat survival.
• Even distribution: Avoiding large deposits in one area to prevent oxygen deprivation.
• High-purity fat: Using refined fat via advanced purification systems such as Condensed or Pure Graft.
• Careful assessment of skin elasticity: Avoiding overfilling when the skin is tight or scarred.

These details require both anatomical knowledge and surgical artistry — areas in which our clinic specializes.

↑25years old, Fat grafting Breastaugmentation 3month, Before/After

Comparison with Other Breast Augmentation Methods

Achieving the Best Long-Term Results

Fat grafting is ideal for those who seek a natural and subtle enhancement.

To achieve and maintain beautiful results, it’s important to balance the injected amount, technique, and skin condition — rather than simply injecting as much as possible.

For those who wish to gain more than two cup sizes, staged fat grafting (two or more sessions) or hybrid augmentation is often the safest and most effective option.

At AVAN TOKYO, every procedure is planned and performed with utmost care, precision, and ethical responsibility — ensuring your results are not only beautiful, but also long-lasting and safe.