Five Cases Diagnosed as Organizing Pneumonia

Organizing pneumonia (OP) is characterized by the presence of granulation tissue in distal air spaces. Five patients were diagnosed histopathologically as OP (3 men, 2 women; mean age, 61 years; range, 49-78 years). All patients were classified as cryptogenic except one, who had sclerosing glomerulonephritis and a history of colchicine use. Corticosteroid treatment resulted in remission in all patients and relapse was seen in one. We aimed to present the clinical features of the five cases diagnosed as OP.