Patients are eligible for the trial if they are 18-70 years old with radiographic stages II and III pulmonary sarcoidosis, and are on prednisone, methotrexate, or azathioprine for pulmonary sarcoidosis or who are steroid-requiring. Patients with extra-pulmonary sarcoidosis (except cardiac and neurosarcoidosis) may be eligible as long as they have active pulmonary (stage II or III) sarcoidosis.