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Am J Clin Pathol ; 155(6): 802-814, 2021 05 18.
Article in English | MEDLINE | ID: mdl-33914058

ABSTRACT

OBJECTIVES: The novel coronavirus, severe acute respiratory syndrome coronavirus 2, causing coronavirus disease 2019 (COVID-19) remains a global health threat and a significant source of human morbidity and mortality. While the virus primarily induces lung injury, it also has been reported to cause hepatic sequelae. METHODS: We aimed to detect the virus in formalin-fixed tissue blocks and document the liver injury patterns in patients with COVID-19 compared with a control group. RESULTS: We were able to detect viral RNA in the bronchioalveolar cell blocks (12/12, 100%) and formalin-fixed, paraffin-embedded tissue of the lung (8/8, 100%) and liver (4/9, 44%) of patients with COVID-19. Although the peak values of the main liver enzymes and bilirubin were higher in the patients with COVID-19 compared with the control group, the differences were not significant. The main histologic findings were minimal to focal mild portal tract chronic inflammation (7/8, 88%, P < .05) and mild focal lobular activity (6/8, 75%, P = .06). CONCLUSIONS: We found that most patients who died of COVID-19 had evidence of mild focal hepatitis clinically and histologically; however, the virus was detected in less than half of the cases.


Subject(s)
COVID-19/virology , Formaldehyde , Liver/pathology , SARS-CoV-2/pathogenicity , Tissue Fixation , Adult , Aged , Aged, 80 and over , Female , Humans , Inflammation/pathology , Liver/virology , Lung/pathology , Lung/virology , Male , Middle Aged , RNA, Viral/genetics , Tissue Fixation/methods
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