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Acute Interstitial Pneumonia: Thin-Section CT Findings in 36 Patients1

Takeshi Johkoh, MD, Nestor L. Müller, MD, PhD, Hiroyuki Taniguchi, MD, Yasuhiro Kondoh, MD, Masanori Akira, MD, Kazuya Ichikado, MD, Masayuki Ando, MD, Osamu Honda, MD, Noriyuki Tomiyama, MD and Hironobu Nakamura, MD

1 From the Department of Radiology, University of British Columbia, Vancouver Hospital and Health Sciences Centre, 855 W 12th Ave, Vancouver, British Columbia, Canada V5Z 1M9 (T.J., N.L.M.); the Department of Respiratory Medicine, Tosei General Hospital, Aichi, Japan (H.T., Y.K.); the Department of Radiology, National Kinki Chuo Hospital for Chest Disease, Osaka, Japan (M. Akira); the First Department of Internal Medicine, Kumamoto University School of Medicine, Japan (K.I., M. Ando); and the Department of Radiology, Osaka University Medical School, Japan (O.H., N.T., H.N.). Received June 29, 1998; revision requested August 13; revision received September 4; accepted November 20. Address reprint requests to N.L.M.



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  		Figure 1. Acute interstitial pneumonia in a 43-year-old woman. Thin-section (1-mm-collimation) CT scan obtained in the right lung 20 days after onset of symptoms demonstrates extensive areas of ground-glass attenuation and intralobular reticular opacities. Traction bronchiectasis extends to the level of the segmental bronchi (solid arrows). Also note a small pleural effusion (open arrows) in the major fissure.

 


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  		Figure 2. Acute interstitial pneumonia in a 64-year-old woman. Thin-section (1-mm-collimation) CT scan obtained in the right lung at the level of the tracheal carina 7 days after the onset of symptoms shows patchy airspace consolidation and traction bronchiectasis (small arrows). Subsegmental bronchi (large arrows) and arteries are distorted, indicating architectural distortion.

 


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  		Figure 3. Acute interstitial pneumonia in a 63-year-old man. Thin-section (1-mm-collimation) CT scan obtained in the left lung 10 days after the onset of symptoms shows airspace consolidation and areas of ground-glass attenuation. The superior lingular bronchus shows traction bronchiectasis (arrows).

 




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