This is why so many cases of sarcoidosis are discovered by chance during a routine x-ray.
Sarcoidosis can affect nearly any organ, with the possible exception of the adrenal gland.
Swollen hilar and mediastinal lymph nodes are not exclusive to sarcoidosis. There are differences in the type of inflammation that help differentiate the diagnoses of these disorders. Sometimes CT scanning provides a more detailed picture that can help eliminate other possibilities. Infiltration refers to the abnormal presence of granulomas in the lung tissue. Depending on how severe and extensive the pulmonary infiltration is, it can cause various respiratory symptoms.