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Hypersensitivity Pneumonitis Producing a BOOP-Like Reaction: HRCT/Pathologic Correlation

Herráez, I. M.D.; Gutierrez, M. M.D.; Alonso, N. M.D.; Allende, J. M.D.

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The authors report an unusual case of hypersensitivity pneumonitis presenting on high-resolution CT as large and sharply defined nodular opacities caused by extensive bronchiolitis obliterans with organizing pneumonia. Many of the nodules were surrounded by a halo of ground-glass attenuation. To the authors' knowledge, this is the first time these features have been described in association with hypersensitivity pneumonitis.

From the Department of Radiology (I.H., M.G.), the Department of Pathology (N.A.), and the Department of Respiratory Medicine (J.A.), Hospital de León, León, Spain.

Address correspondence to I. Herráez, Department of Radiology, Hospital de León, Altos de Nava s/n, León, Spain; E-mail: inmaho@latinmail.com

© 2002 Lippincott Williams & Wilkins, Inc.