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Updated: Aug 10, 2026

Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
Published on: December 19, 2020
Drug-associated organizing pneumonia: high-resolution CT findings in 9 patients
Jonathan D Dodd1, Kyung Soo Lee, Takeshi Johkoh
1Department of Radiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Objective:
To assess the high-resolution computed tomography appearances of drug-associated organizing pneumonia (OP).
Materials And Methods:
Nine patients with clinical and biopsy proven drug-associated OP were included in the study. High-resolution computed tomography exams were retrospectively reviewed by 2 observers for the presence, extent, and distribution of parenchymal abnormalities.
Results:
The commonest findings consisted of air space consolidation (n = 8) and ground-glass opacification (n = 7). The air space consolidation was bilateral and asymmetric in 7 patients, symmetric in 1 patient and in all cases involved mainly the peribronchial or subpleural regions or both. The ground-glass opacities were predominantly bilateral and asymmetric in 6 patients and unilateral in 1 patient. They had a patchy distribution in 4 patients, were diffuse in 2 patients, and subpleural in 1 patient.
Conclusion:
Drug-associated OP most commonly presents with bilateral, asymmetrical air space consolidation in a predominantly peribronchial and subpleural distribution.
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