Travis S. Henry MD, Presenter: Spouse, Employee, F. Hoffmann-La Roche Ltd

Brent Little MD, Abstract Co-Author: Nothing to Disclose

Jonathan Hero Chung MD, Abstract Co-Author: Research Grant, Siemens AG Royalties, Amirsys, Inc

Eugene Aaron Berkowitz MD, Abstract Co-Author: Nothing to Disclose

Sanjeev Bhalla MD, Abstract Co-Author: Nothing to Disclose

1.  The pulmonary cheerio is a commonly encountered sign/pattern that was originally described on CT in the context of lung adenocarcinoma (formerly bronchioloalveolar cell carcinoma). Many other entities - both malignant and benign - can present with a similar appearance. 2.  While the pulmonary cheerio may look similar for different entities, the clinical context, pattern of cheerio distribution and ancillary lung findings can can often point to a specific diagnosis, or at least narrow the differential as discussed in this exhibit.

Introduction Cased-Base Review of Causes of Pulmonary Cheerios: Lung adenocarcinoma Metastatic disease (adenocarcinoma of GI primary; sarcoma; squamous cell carcinoma) Pulmonary Langerhans cell histiocytosis Wegener's granulomatosis Tracheobronchial papillomatosis Malignancy treated with VEGF inhibitors Rheumatoid Nodules Pulmonary meningothelial-like nodule Septic emboli Narrowing the differential diagnosis using other clinical and radiologic clues. Conclusion

http://abstract.rsna.org/uploads/2014/14015191/14015191_h347.pdf

Henry, T, Little, B, Chung, J, Berkowitz, E, Bhalla, S, Getting a Taste for the Pulmonary Cheerio—Imaging Appearance and Differential Diagnosis.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14015191.html