Chest x-ray quiz. The likely problem is a light middle lobe consolidation/atelectasis from pneumonia.
Reading
Marea
M
St. Vincent's Hospital, Sydney and Australian Catholic University, MacKillop Campus, North Sydney.
D005260:Female; D006801:Humans; D008875:Middle Aged; D011014:Pneumonia / Q000150:complications / Q000000981:diagnostic imaging*; D001261:Pulmonary Atelectasis / Q000000981:diagnostic imaging* / Q000209:etiology; D011859:Radiography