Breast asymmetry in Paris 16 — surgical correction

Breast asymmetry means a marked difference between the two breasts: a difference in volume, in shape, in the position of the inframammary fold or in the height of the areola. These components may combine, and it is that combination which determines the technique.

What is breast asymmetry?

A distinction is made between asymmetries of volume, where one breast is markedly more developed than the other; asymmetries of shape, where the two breasts are of comparable volume but differently distributed; and asymmetries of position, where the inframammary fold or the areola are not at the same height.

An asymmetry may be constitutional, appearing at the time of pubertal development, or secondary to a pregnancy, breastfeeding, a change in weight or a previous operation.

Is slight asymmetry normal?

Yes. Slight asymmetry exists in the great majority of women: the two breasts are never strictly identical, any more than the two halves of a face are.

The surgical indication is not based on a measurement, but on the impact: difficulty in dressing, the need to compensate inside the bra, discomfort in intimacy.

What assessment is needed before the operation?

The consultation makes it possible to analyse precisely what differs between the two sides: volume, base of the breast, height of the fold, position and size of the areolas, quality and elasticity of the skin, the existence of ptosis on one side only.

Breast imaging may be requested according to age, history and clinical examination. An asymmetry of recent onset in an adult woman always warrants investigation before any correction is considered.

Which techniques for which type of asymmetry?

Several approaches can be combined, and the operation frequently involves both breasts, not only the one that seems « abnormal ».

Where the asymmetry is a deficit of volume on one side, the smaller breast can be augmented with an implant or with lipofilling.

Where the asymmetry is an excess on one side, the larger breast can be reduced.

Where only one breast is ptotic, a unilateral mastopexy may be enough to restore symmetry.

Where the asymmetry is associated with a malformation — unilateral tuberous breast, Poland syndrome — treatment falls under those specific indications.

How does the operation proceed?

The arrangements depend on the techniques chosen: general anaesthesia in most cases, with duration and hospital stay varying according to whether an implant, lipofilling, a reduction or a combination is involved. These arrangements are set out in consultation.

What is the recovery like?

It corresponds to that of the technique used: the recovery of a breast augmentation, a reduction, a mastopexy or lipofilling as the case may be. A medical bra is generally recommended for several weeks.

How does recovery go after correcting an asymmetry?

Where the two breasts have had different procedures, they do not settle at the same rate in the first weeks: that is normal, and it is precisely what the review consultations are there to follow. The surgeon sees you within seven days, then between day ten and day fourteen. Nurses deliver local care, the anaesthetist follows pain relief. Manual lymphatic drainage at home and hyperbaric oxygen are offered where indicated. See post-operative care.

When is the result final?

The timescale depends on the procedures carried out, and is generally between three and six months for the shape, longer for the scars to mature.

What are the risks?

They are those of the techniques used, set out on the corresponding pages and in the SoFCPRE information leaflets.

One point deserves emphasis: perfect symmetry is not an achievable objective. The operation aims to reduce a difference, not to remove it. Residual asymmetry may persist, and this must be understood before the operation.

Is breast asymmetry reimbursed?

Marked asymmetry, in particular where it is linked to a constitutional malformation, may be eligible for reimbursement after prior authorisation. Moderate asymmetries treated for aesthetic purposes are not. The conditions are examined in consultation.

Frequently asked questions

Do both breasts have to be operated on?

Often yes. Restoring symmetry by operating on one side only is possible in certain cases, but operating on both frequently gives a more harmonious result, better balanced over time.

At what age should surgery take place?

Once breast development is complete and the volume has stabilised.

Last updated: August 2026 · Medical content reviewed by Dr Benjamin Pulvermacker, board-qualified plastic surgeon in Paris 16.

Pour qui cette intervention convient — et pour qui elle ne convient pas

Elle convient lorsque la différence entre les deux seins est marquée, stable et source de gêne réelle — habillement, maillot, vie intime. Toutes les combinaisons techniques sont possibles : augmenter le plus petit, réduire ou remonter le plus grand, ou agir sur les deux. Elle ne convient pas aux asymétries minimes, présentes chez la quasi-totalité des femmes, ni avant la fin de la croissance mammaire, sauf malformation majeure à fort retentissement chez l'adolescente, qui se discute au cas par cas avec les parents.

Limites et risques spécifiques

L'objectif est l'équilibre : deux seins opérés ne seront jamais rigoureusement identiques, en forme comme en évolution dans le temps. Les risques dépendent des gestes combinés (implant, réduction, mastopexie) et se cumulent lorsqu'ils s'associent ; la stabilité du résultat suppose un poids stable. Lorsque l'asymétrie est importante, une prise en charge peut être sollicitée après entente préalable.