Table 3.

Literature review: Histopathologic findings in explants and surgical biopsy specimens from post-acute COVID-19.

	Pathologic findings in explants
	Fibrosis	Peribronchiolar metaplasia/bronchiolization of alveoli	Delicate alveolar septal calcification	Multinucleated giant cells	Microscopic honeycombing	Cyst formation with giant cell reaction
Luo 2020 (N#1)	Interstitial (#1)	Present (#1)	None	Present (viral inclusion bodies) (#1)	None	None
Chen 2020 (N#1)	Interstitial (#1)	None	None	Present (#1)	None	None
Bharat 2020 (N#3)	Interstitial (#3)	Present (#3)	None	Present (#1)	Present (#1)	Present (#1)
Aesif 2021 (N#1)	Vaguely resemble NSIP (#1)	Present (#1)	None	None	Present (#1)	None
Flaifel 2022 (N#3)	Proliferative & fibrotic DAD (#3)	Present (#3)	Present (#1)	Present (#1)	None	None
Roden 2022 (N#2)	NSIP (#NS)	Present (#NS)	None	Present (#NS)	Present (#NS)	Present (#NS)
Rohr 2022 (N#1)	Organizing DAD with prominent fibrosis (#1)	Present (#1)	None	Present (histoplasma granuloma) (#1)	None	None
Pathologic findings in surgical lung biopsies
Konopka 2021 (N#18)	UIP (#9)	Present (#1)	None	None	Present (#2)	None
Aesif 2021 (N#2)	NSIP (#1)	None	None	None	Present (#1)	None
Baldi 2022 (N#6)	Peri bronchial (#5) organizing pneumonia (#1)	None	Present (#1)	None	None	None
Gagiannis 2021 (N#3)	Organizing pneumonia (#1)	None	None	Present (#1)	None	None
Roden 2022 (N#30)	NSIP (#NS)	Present (#NS)	None	Present (#NS)	Present (#NS)	None

1 Abbreviations: NSIP: Nonspecific interstitial pneumonia, DAD: Diffuse alveolar damage, NS: Not specified, UIP: Usual interstitial pneumonia.