What screening tests are available for patients with systemic sclerosis?
Systemic sclerosis (SSc) is a complex autoimmune disease that can affect the skin, lungs, heart, and other organs. Screening tests help detect complications early, especially lung involvement like interstitial lung disease (ILD) and pulmonary arterial hypertension (PAH). The main screening tools include pulmonary function tests (PFTs), high-resolution computed tomography (HRCT) of the chest, nailfold capillaroscopy, and blood tests for specific autoantibodies.
What the research says
For lung screening, the 2023 ACR/CHEST guideline conditionally recommends pulmonary function tests (PFTs) and high-resolution computed tomography (HRCT) of the chest for people with systemic sclerosis at risk for interstitial lung disease (ILD) 7. The guideline conditionally recommends against screening with chest X-ray, 6-minute walk test distance, or bronchoscopy 7. Nailfold videocapillaroscopy (NVC) is another screening tool: advanced NVC patterns are significantly associated with ILD and skin fibrosis in SSc patients 5. NVC also helps evaluate Raynaud's phenomenon, which is often the earliest sign of SSc 89. Blood tests for SSc-specific autoantibodies (e.g., anti-Scl-70, anti-Th/To) are part of the screening workup 58. Additionally, screening for peripheral artery disease (PAD) is important because SSc increases cardiovascular risk, though PAD is often underdiagnosed 2. For gastrointestinal symptoms, pH monitoring and manometry can assess reflux, which is common in SSc 3.
What to ask your doctor
- Should I have pulmonary function tests (PFTs) and a high-resolution CT scan to check for lung involvement?
- Is nailfold capillaroscopy recommended to assess my risk for systemic sclerosis complications?
- Which autoantibody tests (like anti-Scl-70 or anti-Th/To) are appropriate for my case?
- Do I need screening for peripheral artery disease or other cardiovascular issues?
- How often should I be re-screened for interstitial lung disease or other organ involvement?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.