My baby brother went to the doctor and they said one chest side is bigger?

what are the symptoms towards ?
Answer:
In the first 4 yearsof life, its normal to have some assymetries of the body, that correct themselves with plain normal growth...
The important issue here is...how different is one side from the other..?
Did they perform some X rays to check lungs and heart?
If they performed none, relax,,,,that means that the assymetry (one side of a region of te body of different size) is nothing to be worried about,.....or is only a commentof some incidental and non meaningful finding....

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It could be anything, no one here can tell you, am sorry

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