From Royal Brompton Hospital: Good review of organizing pneumonia on HRCT

http://www.ncbi.nlm.nih.gov/pubmed/21744289

Eur Radiol. 2011 Jul 10. [Epub ahead of print]
Organizing pneumonia: a kaleidoscope of concepts and morphologies.
Roberton BJ, Hansell DM.
Source
Department of Radiology, Royal Brompton Hospital, Sydney Street, London, SW36NP, UK.
Abstract
The basic histopathological pattern of organizing pneumonia (OP) is well recognized, but the contexts in which it is encountered continue to increase. In parallel with an appreciation of new causes and associations of OP, an understanding of OP in the spectrum of lung injury and repair has evolved. There is an increasing array of HRCT manifestations of OP, some of which have only recently been described. This article concentrates on new concepts surrounding OP and highlights newly described imaging patterns.