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The flow chart suggests the diagnostic procedure and the possible therapeutic options for PAH in SSc. PASP, pulmonary artery systolic pressure; PFT, pulmonary function tests; TLCO, carbon monoxide transfer factor; FVC, forced vital capacity; CCB, calcium channel blockers; ILD, interstitial lung disease; HRCT, high resolution computed tomography; CYC, cyclophosphamide; PAH, pulmonary arterial hypertension.
