Dear friend, welcome to HCM!
Mild hilar prominence may be non specific in the elders or may be due to disease like lymph nodes as in your case. it alone can not suggest any treatment with steroids
Was sarcoid confirmed with ACE (angiotensin
converting enzyme) levels along with biopsy?
Response with steroid may say it was sarcoidosis
You may to do a HRCT thorax (CT scan
) and ACE levels to look for any progression or response.
Please be guided by your pulmonoloist treating you.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.