Sarcoidosis
Sarcoidosis is a multisystemic disorder of unknown aetiology which is characterised by non-caseating
granulomatous inflammation that involves the lung in about 90% of affected patients. A characteristic
feature is bilateral hilar lymphadenopathy, which is often symptomless and detected on routine CXR.
Radiological lung involvement can be associated with or occur independently of hilar lymphadenopathy.
Clinical features:
may be asymptomatic...