Congenital Breast Differences

Breast Asymmetry and Underdevelopment

A clear difference in size, shape or nipple position between the breasts — or breasts that never developed — can be corrected by treating each side individually.

Types of asymmetry

  1. One breast clearly smaller or underdeveloped (hypoplasia)
  2. One breast larger or lower than the other
  3. Different shapes, for example one tuberous breast
  4. Nipples at different levels or of different size
Breast asymmetry correctionTwo breasts of clearly different size and shape, compared with a balanced result after enlarging the smaller side and adjusting the larger side. SMALLER, UNDERDEVELOPED SIDELARGER SIDE SIZE, SHAPE AND NIPPLE LEVEL MATCHEDBreast asymmetryBalanced result
  1. Smaller, underdeveloped side
  2. Larger side
  3. Size, shape and nipple level matched
Figure 1Breast asymmetry: one smaller, underdeveloped side before and after balancing.
A smiling woman in a white top
Balanced, natural results — planned around your body and your wishes.

How balance is restored

The smaller breast is enlarged with an implant or fat grafting, and the larger breast can be lifted or reduced. Nipple position and areola size are matched. The aim is a balanced appearance in clothing and without — two sides that look like a pair.

Oncoplastic breast-conserving surgeryThe tumour is removed with a margin and the remaining breast tissue is rearranged using reduction patterns to preserve shape, with symmetry surgery on the other side. TUMOUR WITH CLEAR MARGIN TISSUE REARRANGED (REDUCTION PATTERN) SYMMETRY ON THE OTHER SIDE
  1. Tumour with clear margin
  2. Tissue rearranged (reduction pattern)
  3. Symmetry on the other side
Figure 2The larger breast can be lifted or reduced using the same patterns as in reduction surgery.

Recovery

Most corrections need one night in hospital and about a week in Istanbul. Light activity resumes within days; sport is avoided for four to six weeks.

  1. 01Smaller sideImplant or fat grafting
  2. 02Larger sideLift or reduction
  3. 03Hospital stay1 night
  4. 04Stay in IstanbulAbout 7 days
Figure 3Asymmetry correction at a glance.
A woman relaxing at home with a warm drink
Most women return to light daily activities within days to a few weeks.

Breast asymmetry correction in Istanbul, Turkey

Asymmetry correction is a single-stage operation for most patients. Clear photographs and your bra sizes for each side help prepare an initial plan before you travel to Istanbul.

Implant positions in breast reconstructionCross-section of the chest comparing a pre-pectoral implant placed in front of the chest muscle with a sub-pectoral implant placed partly beneath it. IMPLANT PECTORALIS MUSCLE RIBS IMPLANT MUSCLE COVER Pre-pectoralSub-pectoral
  1. Implant
  2. Pectoralis muscle
  3. Ribs
  4. Muscle cover
Figure 4Volume for the smaller side: an implant in front of or beneath the chest muscle.

Frequently asked questions

Is some asymmetry normal?

Yes. Slight differences are common. Correction is considered when the difference is clearly visible or affects clothing and confidence.

Can both breasts be treated in one operation?

Usually yes — enlarging one side and lifting or reducing the other are often combined.

Dr. Fatih Kılıç

Medically reviewed by Dr. Fatih Kılıç, Plastic, Reconstructive and Aesthetic Surgeon. This page is for general information and does not replace an individual consultation.

Information & application

Considering breast reconstruction?

You do not need to decide on a surgical technique before contacting us. Share your treatment history and what you hope to achieve — your case will be assessed individually.

  • Individual review by Dr. Fatih Kılıç
  • Reply from our international patient team
  • Your details are kept confidential
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