Table 2.

Microscopic findings in 40 lung explants from 20 post-acute COVID-19 syndrome undergoing bilateral orthotopic lung transplantation.

	Parenchymal				Airways						Vascular
	Interstitial fibrosis NOS	NSIP fibrotic pattern	NSIP cellular pattern	Focal microscopic honeycombing	Cysts with fibrosis	Acute alveolitis	Multinucleated giant cells	Peribronchiolar metaplasia	Obliterative bronchiolitis	Alveolar hemosiderosis	Thrombosis
Case1	4+	4+	4+	0	0	0	1+	4+	1+	4+	1+
Case2	3+	1+	4+	0	1+	2+	2+	3+	0	4+	0
Case3	4+	1+	4+	0	0	0	2+	4+	1+	4+	1+
Case4	4+	1+	4+	1+	1+	0	1+	4+	0	4+	0
Case5	4+	4+	4+	0	0	1+	2+	4+	1+	3+	2+
Case6	4+	4+	4+	1+	0	3+	1+	4+	0	4+	3+
Case7	4+	4+	3+	0	3+	4+	3+	0	0	3+	1+
Case8	4+	4+	1+	0	0	4+	2+	2+	0	4+	0
Case9	4+	4+	4+	1+	1+	0	2+	3+	1+	4+	0
Case10	4+	1+	4+	0	0	0	0	2+	0	4+	0
Case11	4+	4+	1+	0	4+	1+	1+	3+	0	0	0
Case12	4+	1+	4+	0	0	1+	2+	4+	3+	0	0
Case13	4+	4+	4+	0	0	1+	1+	4+	0	1+	0
Case14	4+	4+	4+	0	0	2+	0	4+	0	0	1+
Case15	4+	1+	4+	0	2+	0	2+	1+	0	0	0
Case16	4+	1+	4+	0	0	0	1+	4+	1+	4+	1+
Case17	4+	1+	4+	0	1+	4+	1+	4+	0	4+	0
Case18	4+	4+	4+	1+	2+	0	2+	4+	0	1+	0
Case19	4+	4+	4+	0	1+	0	4+	4+	0	4+	0
Case20	4+	1+	4+	1+	0	0	0	4+	0	4+	0

1 Abbreviations: NOS: Not otherwise specified, NSIP: Nonspecific interstitial pneumonia.