Jaleh Shariaati Sarabai - Rheumatologist, Rheumatology Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Davood Attaran - Pulmonologist, Lung Disease Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
Shahrzad M.lari - Pulmonologist, Lung Disease Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
Pouya Nazari - General Practitioner, Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

Introduction: Pulmonary involvement secondary to Systemic Sclerosis (SSc) is the major cause of morbidity and mortality in SSc patients. We designed this study to determine the correlation of important lung function parameters with lung High Resolution CT (HRCT) scan findings. Materials and Methods: Thirty–two consecutive diffuse SSc patients with pulmonary fibrosis were enrolled in this cross-sectional study. Patients with pulmonary fibrosis secondary to other causes, previous restrictive lung disease, and history of smoking were excluded. Complete lung function evaluation was performed. The EDD (Exercise capacity, Dyspnea, and Diffusing capacity of lungs for carbon monoxide) index was determined. The Warrick score was calculated based on lung HRCT findings. Results: The mean age of the patients was 39.18 years ±9.39 (SD).Seventeen (53%) patients were in EDD stage 1 (score: 0≤score≤3), 9 patients (28%) in stage 2 (3

High Resolution CT Scan, Lung Function Tests, Pulmonary Fibrosis, Scleroderma