Medical Health Encyclopedia

Scleroderma - Prognosis

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These antibodies are also found in other rheumatologic disorders, so detecting them does not necessarily prove that a patient has scleroderma. At the same time, studies have found that specific antibodies are associated with specific aspects of the disease. Therefore, identifying their presence could help diagnose, treat, and monitor people with scleroderma. Here are a few examples:

  • Anti-U1-RNP and anti U3-RNP are associated with muscle inflammation.
  • ACA is commonly associated with pulmonary hypertension and vascular disease.
  • TOPO is associated with pulmonary fibrosis.
  • RNA Polymerase III (Pol 3) is rarely linked to severe interstitial fibrosis, although this autoantibody is strongly present in patients with kidney crisis.
  • Patients with diffuse scleroderma who have Pol 3 have the best survival rates.



Diagnosing Systemic Complications

Diagnosing Lung Complications. Changes in the lungs may occur early in scleroderma lung disease, and prompt treatment is very important to prevent complications. For this reason, once a diagnosis is made, the doctor will check for lung changes in the following ways:

  • Listen to the lungs through a stethoscope. Rales, a crackling sound at the base of the lungs as the patient breathes in, is a sign of pulmonary fibrosis, even if breath function is normal.
  • Perform respiratory function tests to determine lung capacity.
  • Take a chest x-ray (however, x-rays do not always find lung disease, especially in children).
  • Have patients inhale nitric oxide to test the ability of blood vessels to open.
  • Perform more extensive tests, such as high-resolution computed tomography (CT) scans and bronchoalveolar lavage, if there is a suspicion of severe lung scarring.

Newer tests showing promise in diagnosing lung complications include:

  • The induced sputum test, which looks at cells taken from coughed-up phlegm
  • A test that uses an inhaled chemical, technetium-labeled diethylenetriamine pentaacetate (99mTC-DTPA), to detect lung damage

Diagnosing Heart Complications. Patients with suspected heart complications should have the following tests:

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