Recovered From RSV. Old X-ray Showed Minimally Increased Perihilar Opacities. Should I Be Worried?
It is understandable to be worried.
First of all perihilar refers to a particular location on the xray; peri-just outside and hilum is an area in the lung where the blood vessels and other structures enter and leave the lung.
The opacities that were seen were just outside the hilum of the lung. This can occur in viral or bacterial infections of the lung. In your daughter's case, with a history of previous RSV, even though now negative, it may be remnants from the previous infection.
Any viral pneumonia can cause opacification in any aspect of the lung.
If this xray was compared to the xrays she would have done while ill, this newer one would likely appear to be resolution of her infection.The fact that the opacities were described as minimal makes this more likely.
You can continue to monitor her and consider taking her to your pediatrician if you have any concerns regarding her breathing.
I hope this helps, please feel free to ask any other questions