Fig. 1From: Two cases of hard metal lung disease showing gradual improvement in pulmonary function after avoiding dust exposureHigh-resolution computed tomography (HRCT) findings before and after the avoidance of dust exposure in Case1. Bilateral diffuse centrilobular micronodular opacities and curved linear shadows in the dorsum. a: before the avoidance (a-1: upper lobe; a-2: lower lobe); b: after the avoidance (b-1: upper lobe; b-2: lower lobe)Back to article page