Table 1.

Patient clinicopathological information.

Characteristics	N or mean	% or range
COVID-19 cohort (55 patients)
Age	46 y	13–82 y
Sex	M 38, F17 (2.2:1)
Hospitalisation time	12.6 d	1–88 d
Major symptoms on admission
Fever	22	40.00
Cough	12	21.82
Shortness of breath	27	49.09
Major comorbidities
Diabetes	11	20.00
Cardiovascular complications	15	27.27
Respiratory complications	9	16.36
Cancer	5	9.09
Liver or kidney complications	18	32.73
Thyroid complications	5	9.09
Aplastic anaemia	2	3.64
Patients with no prior comorbidities	4	7.27
Most common lung pathological features
Exudative phase of diffuse alveolar damage	25	45.45
Organizing phase of diffuse alveolar damage	13	23.64
Acute bronchopneumonia	5	9.09
Acute lung injury	9	16.36
No changes	3	5.45
Coexisting acute bronchopneumonia with DAD	12
Control cohort (15 subjects)
Age	43.1 y	18–70 y
Sex	M 8, F 7 (1:1)
Lung pathology
Normal lung	13	86.66
Diffuse alveolar haemorrhage	1	6.66
Diffuse alveolar damage	1	6.66