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report is normal except mild dilatation of Left Atrium, please note this could be due to just Obesity if it is there or heart condition called Atrial Fibrillation
It must be correlated clinically as if there is Hypertension
,IHD,Diabetes or any other heart disease
if nothing is there and it is only positive finding it may not be of any clinical significance and even trans thoracic measurement has some limitation of accuracy.
It can be done with modern 3-4 dimensional Echocardiography with volume measurement.
Please consult your Cardiologist in this regard .