ACE and sarcoidosis: In a recent monocentric study of patients with sarcoidosis-lymphoma syndrome compared to unselected sarcoidosis patients, significant differences between initial or follow-up patients' characteristics have been evidenced especially regarding angiotensin-converting enzyme (ACE) blood levels that have proved to be higher in sarcoidosis-lymphoma syndrome, while the sarcoidosis alone group was more likely to have lung involvement, a restrictive ventilatory defect and a higher relapse rate (98).