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Lipoid Pneumonia in 53 Patients After Aspiration of Mineral Oil: Comparison of High-Resolution Computed Tomography Findings in Adults and Children

Marchiori, Edson MD, PhD*; Zanetti, Gláucia MD†; Mano, Claudia Mauro MD*; Irion, Klaus Loureiro MD, PhD‡; Daltro, Pedro Augusto MD†; Hochhegger, Bruno MD†

Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e3181a9ec9f
Thoracic Imaging
Abstract

Objective: To evaluate the high-resolution computed tomography (HRCT) findings in 53 patients with exogenous lipoid pneumonia and to compare the imaging features of adults and children.

Materials and Methods: The study included 35 children and 18 adults. Statistical comparisons of findings in the 2 age groups were performed using either Pearson χ2 or Fisher exact test, as appropriate, at 5% significance level.

Results: The main HRCT findings included air-space consolidation, ground glass attenuation, air-space nodules, and crazy-paving pattern. Abnormalities predominated in the posterior regions of the right lung. The right lower lobe was most likely to show severe involvement.

Conclusions: The presence of air-space consolidation, the involvement of upper right lobe, and the central and posterior distribution of the lesions were more common in children, whereas the crazy-paving pattern and random localization were significantly more frequent in adults. The other findings were not different between the 2 groups.

Author Information

From the *Fluminense Federal University; †Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; and ‡The Liverpool Heart and Chest Hospital, Liverpool, United Kingdom.

Received for publication March 14, 2009; accepted April 9, 2009.

Reprints: Edson Marchiori, MD, PhD, Rua Thomaz Cameron, 438. Valparaiso, CEP 25685.120. Petrópolis, Rio de Janeiro, Brazil (e-mail: edmarchiori@gmail.com).

© 2010 Lippincott Williams & Wilkins, Inc.