Time for #RadiologyRounds! This week we have a man in his 70s with CLL s/p treatment now in remission. He had fevers, a dry cough, and malaise that initially improved outpatient with antibiotics but have now recurred.

Check out the video of his CT scan here

The CT had multiple findings including small nodules, consolidations, and bands of fibrosis around the secondary pulmonary nodules. This is known as Arcade-Like Sign and has classically been described with COP. While it can make you think COP, it has a low sensitivity

The patient underwent bronchoscopy with Tbbx given the suspicion for OP. The BAL was negative for bacterial, viral, fungal, or mycobacterial infection. The histopathology revealed organizing pneumonia. The patient was started on glucocorticoids and all symptoms improved