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  • Title: Predictive value of gallium scan, angiotensin-converting enzyme level, and bronchoalveolar lavage in two-year follow-up of pulmonary sarcoidosis.
    Author: Baughman RP, Shipley R, Eisentrout CE.
    Journal: Lung; 1987; 165(6):371-7. PubMed ID: 2828772.
    Abstract:
    Evaluation of patients with pulmonary sarcoidosis with serum angiotensin-converting enzyme (ACE), gallium scan, and bronchoalveolar lavage (BAL) has proved useful in demonstrating active disease, especially in the lungs. Long-term prognosis based on the results of pretreatment ACE, gallium scan, and BAL has not been previously clarified. We studied 44 patients with initially symptomatic pulmonary sarcoidosis who were begun on steroid therapy after initial evaluation. At 2 years, 21 of 44 (48%) patients still had worsening disease. Of 31 patients who had positive gallium scan pretreatment, 21 (68%) still had worsening disease at 2 years. None of the 13 patients with a negative gallium scan had worsening disease at 2 years (Chi square = 14.2, P less than 0.01). Similar analysis of the pretreatment serum ACE level, percentage of lymphocytes in the BAL fluid, and ratio of T-helper/inducer to T-suppressor/cytotoxic (T4/T8) in the BAL fluid also had some predictive value for worsening disease at 2 years; however, these tests were less sensitive than the gallium scan. In patients with pulmonary sarcoidosis, the finding of a negative gallium scan suggests a small likelihood that disease activity will worsen after 2 years.
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