ABSTRACT
To compare liver cancer resectability rates before and during the COVID-19 pandemic. Background: Liver cancers usually present with nonspecific symptoms or are diagnosed through screening programs for at-risk patients, and early detection can improve patient outcomes. In 2020, the COVID-19 pandemic upended medical care across all specialties, but whether the pandemic was associated with delays in liver cancer diagnosis is not known. Methods: We performed a retrospective review of all patients evaluated at the Johns Hopkins Multidisciplinary Liver Cancer Clinic from January 2019 to June 2021 with a new diagnosis of suspected or confirmed hepatocellular carcinoma (HCC) or biliary tract cancer (BTC). Results: There were 456 liver cancer patients (258 HCC and 198 BTC). From January 2019 to March 2020 (pre-pandemic), the surgical resectability rate was 20%. The subsequent 6 months (early pandemic), the resectability rate decreased to 11%. Afterward from October 2020 to June 2021 (late pandemic), the resectability rate increased to 27%. The resectability rate early pandemic was significantly lower than that for pre-pandemic and later pandemic combined (11% lower; 95% confidence interval [CI], 2%-20%). There was no significant difference in resectability rates pre-pandemic and later pandemic (7% difference; 95% CI, -3% to 16%). In subgroup analyses, the early pandemic was associated with a larger impact in BTC resectability rates than HCC resectability rates. Time from BTC symptom onset until Multidisciplinary Liver Clinic evaluation increased by over 6 weeks early pandemic versus pre-pandemic (Hazard Ratio, 0.63; 95% CI, 0.44-0.91). Conclusions: During the early COVID-19 pandemic, we observed a drop in the percentage of patients presenting with curable liver cancers. This may reflect delays in liver cancer diagnosis and contribute to excess mortality related to the COVID-19 pandemic.
ABSTRACT
AIM: To evaluate the risk of SARS-CoV-2 transmission in surgical smoke and aerosols during laparoscopy and open surgery. MATERIAL AND METHODS: A systematic review (PROSPERO ID: CRD42021268366) was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Articles were selected based on the title and abstract as well as the type of publication. Primary objectives of the study were to assess potential risk of contamination as well as comparing laparoscopic and open procedures in terms of danger of SARS-COV-2 transmission. RESULTS: Fifty-three articles were identified and included in the review. No case of SARS-CoV-2 transmission to operating room personnel during open or minimally invasive surgery was identified at the time the review was conducted. Furthermore, no significant difference was observed between smoke and aerosols generated from open surgery and those generated from minimally invasive surgery. CONCLUSION: COVID-19 transmission in surgical smoke and aerosols has yet to be observed. However, given the potential risk of viral transmission, caution should be exercised when performing surgery to ensure the safety of the operating room personnel. When clinically indicated and when protective measures can be implemented, minimally invasive surgery should be performed instead of open surgery to ensure optimal patient outcomes.