Stages of radiographic involvement in pulmonary sarcoidosis

Stage	Radiographic findings
I	Bilateral hilar adenopathy
II	Bilateral hilar adenopathy and reticular opacities (predominantly in upper lobes)
III	Reticular opacities (predominantly in upper lobes) without hilar lymphadenopathy
IV	Reticular opacities, volume loss, conglomerated masses with traction bronchiectasis. Calcification and cavitation or cyst formation may be present.
Nodular sarcoid	Multiple, bilateral lung nodules and minimal hilar adenopathy

Reference:

Scadding JG. Prognosis of intrathoracic sarcoidosis in England: A review of 136 cases after five years' observation. Br Med J 1961; 2:1165.

Graphic 56321 Version 3.0

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