Lessons of the month 2: Chronic eosinophilic pneumonia (CEP): A rare manifestation of infliximab therapy.

We present a rare and unusual case of 22-year-old man who was on infliximab therapy for his uncontrolled ulcerative colitis. Infliximab was stopped as he didn't get any benefit from it and he ended up having subtotal colectomy and ileostomy. He presented with shortness of breath and eosinophilia and underwent a number of investigations and finally a diagnosis of chronic eosinophilia secondary to infliximab was made. © Royal College of Physicians 2020. All rights reserved.