Staging of sarcoidosis (on CXR) a. Stage I: bilateral hilar adenopathy without parenchymal infiltrates (highest rate of remission)

. Stage II: hilar adenopathy with parenchymal infiltrates

c. Stage III: diffuse parenchymal infiltrates without hilar adenopathy (least favorable prognosis)

d. Stage IV: pulmonary fibrosis with honeycombing and fibrocystic parenchymal changes

Treatment . Most cases resolve or significantly improve spontaneously in 2 years and do not require treatment. b. Systemic corticosteroids are the treatment of choice.