Diffuse systemic sclerosis is commonly associated with involvement of which organ?

Diffuse systemic sclerosis is commonly associated with involvement of which organ?

• A. Lungs with fibrosis
• B. Liver cirrhosis
• C. Brain gliosis
• D. Joints only

Answer: (A)

In diffuse systemic sclerosis, the lungs are frequently and characteristically involved early, with interstitial fibrosis driving a restrictive pattern. The disease process causes sustained microvascular injury and fibroblast activation, leading to fibrotic remodeling of the lung interstitium. This pulmonary fibrosis is a major source of symptoms like dyspnea and cough and is a key determinant of prognosis, making lungs with fibrosis the most common and clinically relevant organ involvement in this context. Liver cirrhosis and brain gliosis are not typical features of diffuse systemic sclerosis, and although joints can be affected, the disease is not limited to joints alone—internal organ involvement, especially the lungs, is common and defining for the diffuse form.

In diffuse systemic sclerosis, the lungs are frequently and characteristically involved early, with interstitial fibrosis driving a restrictive pattern. The disease process causes sustained microvascular injury and fibroblast activation, leading to fibrotic remodeling of the lung interstitium. This pulmonary fibrosis is a major source of symptoms like dyspnea and cough and is a key determinant of prognosis, making lungs with fibrosis the most common and clinically relevant organ involvement in this context.

Liver cirrhosis and brain gliosis are not typical features of diffuse systemic sclerosis, and although joints can be affected, the disease is not limited to joints alone—internal organ involvement, especially the lungs, is common and defining for the diffuse form.