More than one mechanism may cause early and transient opacities in non-BT-treated lung zones We read with great interest the correspondence by J.N.S. d'Hooghe and colleagues focusing on the pathophysiology of early transient radiological abnormalities following bronchial thermoplasty (BT). In line with our previous report [1], they have reported transient radiological opacities in all treated lobes of 12 BT-treated patients and in an adjacent untreated lobe in 31% of cases [2].
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Debray et al. (2017) studied this question.
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