ACE and sarcoidosis: Regarding the serological marker when diagnosed with sarcoidosis, serum ACE and soluble Interleukin (IL)-2 receptor tended to be lower in past tumor groups (18.3 ± 5.9 vs. 21.8 ± 13.5, p = 0.061, 782 ± 351 vs. 1093 ± 889, p = 0.072, respectively).