Table 1.

Radiographic staging of sarcoidosis patients at presentation according to the scadding criteria.

Radiographic stage	Chest X-ray	Frequency (%)	Resolution (%)
0	Normal	5–15
I	BHL	25–65	60–90
II	BHL and pulmonary infiltrates	20–40	40–70
III	Pulmonary infiltrates without BHL	10–15	10–20
1V	Advanced pulmonary fibrosis	5	0

The estimated frequency at presentation is given as well as the probability of spontaneous resolution during disease course (BHL, bilateral hilar lymphadenopathy) (1, 114, 116).