Hi, My mom's Xray report has suggested this "Prominent bronchovascular markings noted in bilateral lower zones, of concern for pneumonitis. Suggested RT-PCR correlation in view of current pandemic" ,can someone please explain what does it mean, Btw RTPCR is negative,spo2 is 99, she was having cough and fever. Now shes is alright with no fever and coughs little bit every now and then. Thank you.