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Chronic Vaping-Induced Lung Fibrosis

Imaging findings

Serial imaging from 2017 to 2021 shows progressive, severe loss of lung volume and diffuse, bilateral, upper-lung-predominant lung disease. High-resolution CT demonstrates a widespread interstitial pattern resembling non-specific interstitial pneumonia (NSIP) with extensive reticulation, diffuse ground-glass opacities, traction bronchiectasis, and peripheral sparing. Over time, the disease progresses to end-stage fibrosis accompanied by signs of severe pulmonary hypertension, including a massively dilated pulmonary artery, mediastinal lymphadenopathy, and spontaneous pneumomediastinum.

Key takeaways

Chronic heavy vaping can result in severe, progressive, and potentially fatal inhalational lung injury leading to widespread pulmonary fibrosis. The upper-lung-predominant distribution of reticulation and NSIP-like fibrosis strongly supports an inhalational etiology. In severe cases, this injury can lead to end-stage respiratory failure and pulmonary hypertension, requiring bilateral lung transplantation.

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