Sarcoidosis doesn't involve

Ref Robbins 9/e p693 Sarcoidosis almost always involves the lungs, but it can also affect the skin, eyes, nose, muscles, hea,liver, spleen, bowel, kidney, testes, nerves, lymph nodes, joints, and brain. Granulomas in the lungs can cause narrowing of the airways and inflammation and scarring (fibrosis) of lung tissue Only 5-15p% cases have involvement of sarcoidosis in brain called as neurosarcoidosis, it's very rare