Breast or handasymmetry(one is larger than the other) is not unusual in the human form.
A change can mean an underlying health issue, though, such asbreast canceror even a genetic condition.
Why Is One Breast Bigger Than the Other?

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Breast asymmetry occurs in many people.Its common for individual breasts to be of different volumes or different shapes.
Asymmetric breasts are most commonly a normal findingespecially among young females wheremalignancyis rarebut there are aesthetic treatment options.
Surgical options to correct forbreast asymmetryinclude breast lift, breast reduction, and breast augmentation.
Is It Normal for a Breast to Be Bigger than the Other?
Usually, the smaller breast is opposite from your dominant hand.
If there’s a big difference, special bras or plastic surgery can be options.
But other causes, such as a breastabscess, are possible and require medical care.
Hemihypertrophy: Why Is One Hand Bigger Than the Other?
Hemihypertrophymeans that one side of the body has grown more than the other.
For example, some people have different-sized hands, with one hand being larger than the other.
Genetic causes are at work in some cases of asymmetry due to hemihypertrophy.
They include:
These syndromes are complicated and managed by pediatricians, geneticists, and orthopedic surgeons.
Importantly, the presence of associated tumors must be ruled out.
Can Muscle Use Cause Asymmetry?
That may be the reason for a right-side dominance in a study of Australian females.
Muscle imbalances are a response to the environment and can occur in the limbs of young athletes, too.
It is not the same as being small for gestational age (SGA) but otherwise healthy.
IUGR can often increase the risk of some health problems for the baby.
IUGR can be defined as eithersymmetricorasymmetric.
At birth, limbs with reduced muscle mass can appear asymmetric.
In severe cases, even vital organ growth is stunted.
There are a number of possible causes for asymmetry, most of them benign.
In rare cases, the difference in size and shape can be due to a health condition.
Your healthcare provider can diagnose the reason for asymmetry and discuss any necessary treatment options with you.
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