PMC4695635_01
(a) HRCT in 2007 showed slight subpleural lines (arrow). (b) HRCT in March 2012 showed a predominance of subpleural reticular abnormalities with some ground glass features. (c) HRCT in July 2012 showed a worsening of reticular features with new ground glass opacities (arrow). (d) HRCT in August 2012 showed diffuse ground glass opacities with traction bronchiectasis.
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The chest CT also showed a right upper lobe nodule of 1 cm in diameter (Figure 1(b)). Discrete subpleural reticular features already existed in 2007 (Figure 1(a)). In July 2012, dyspnea worsened and CT scan revealed increased reticular opacities with appearance of patchy ground glass opacities (Figure 1(c)). One month later the patient experienced severe respiratory insufficiency with rapid worsening of CT scan abnormalities including ground glass opacities associated with traction bronchiectasis (Figure 1(d)).