My 3 months old daughter diagnosed with mild lpa stenosis please brief me about this illness and treatment thanks?

Pyloric stenosis is uncommon in an infant three months of age, and will cause symptoms of projectile regurgitation. If the disease is considered "mild", and "failure to thrive " (not meeting weight gain milestones) is a concern of your pediatrician, get a second opinion, but this will usually correct without surgical intervention.

"lpa" seems to be an unusual abbreviation or a typing error. Needs clarification!

If there was a cardiac evaluation, you may be referring to a mild Pulmonary artery stenosis. There is a mild narrowing of the artery carrying blood to the lungs If there is any change in feeds, growth or breathing close follow up is recommended. Please see your physician.