Differential Diagnosis of Upper Zone Reticulonodular Shadows

Upper zone Reticulonodular Shadows

The differential diagnosis of upper zone reticulonodular shadows are / the causes of upper zone reticulonodular shadows are :

-radiation
-extrinsic allergic alveolitis
-allergic bronchopulmonary aspergillosis
-sarcoidosis
-tuberculosis 
-ankylosing spondylitis