Posterior Lung Subpleural Sparing
Posterior Lung Subpleural Sparing

Supine high-resolution CT (HRCT) in a patient with fibrotic nonspecific interstitial pneumonia (NSIP) proven on lung biopsy. Reticular opacities and traction bronchiectasis predominate in this patient, although ground-glass opacity is also visible in the abnormal areas. Subpleural sparing is visible. At this level, predominance in the posterior lung is visible (arrow).