Organizing pneumonia adjacent to lung cancer: frequency and clinico-pathologic features.

In order to assess the frequency of peripheral organizing pneumonia (OP) in patients with resected lung tumours and to describe its differential features, a cross-sectional study with prospective data collection was realized in a community teaching hospital. Demographic and clinical data were collected from clinical records. The lung specimens removed with a curative purpose in 89 consecutive patients with lung tumours were studied and the clinical and pathological characteristics of patients with and without OP were compared.