Table 2

Summary of the pulmonary pathological features of patients with severe acute respiratory syndrome

	Patients
	1	2	3	4	5	6	7
+, mild; ++, moderate; +++, severe; −, not present.
BOOP-like, bronchiolitis obliterans organising pneumonia-like lesion.
Atypical pneumocytes	+	+	+	+	+	+	+
Diffuse alveolar damage
Pulmonary oedema	+++	+++	+++	+++	+++	+++	+++
Hyaline membrane	+	+++	+++	+++	++	++	++
Organising phase	+	+	++	++	++	++	++
Interstitial fibrosis	+	+	+	+	++	+++	++
BOOP-like	−	+	+	+	−	+	−
Pulmonary haemorrhage	−	−	++	−	+	++	−
Bronchopneumonic changes	−	+	+	−	−	+	−