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Objective: to define the prevalence of interstitial lung fibrosis in systemic sclerosis (SSc) and its relationship with the different clinical forms of disease and ANA specificities. Methods: fifty patients with SSc were submitted to pulmonary high resolution computed tomography (HRCT). Lung abnormalities were evaluated according to Warrick’s score that considers both the severity and the extent of fibrotic lesions. Results: pulmonary HRCT abnormalities were observed in 84% of SSc patients. Ground glass aspects (60%), irregular pleural margins (56%) and septal/subpleural lines (68%) were the most common lesions. The distribution of these abnormalities favoured the posterior basilar segments of both lungs. HRCT findings were significantly more frequent in males and in patients with the cutaneous diffuse form of SSc and with the specific antibody anti-Scl70. Conclusions: HRCT is a very useful method for the diagnosis of interstitial lung fibrosis in SSc. Warrick’s score permits to quantify the HRCT findings and to evaluate their relationship with the disease clinical forms and ANA specificities.
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