Inflammatory pseudotumor in a five-year-old girl

Inflammatory pseudotumor is the most common primary lung mass in children. In many cases, it mimics organizing pneumonia on imaging tests. Another site often affected by inflammatory pseudotumors is the orbit, although they can be found in any part of the body. Inflammatory pseudotumors are rare and quasi-neoplastic, as radiologically and clinically they behave like malignant tumors. Consensus about their pathogenesis, natural history, imaging findings, and treatment options has yet to be reached. (C) 2010 SERAM. Published by Elsevier Espana, S.L. All rights reserved.