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COVID-19 Impact on Diagnosis and Staging of Colorectal Cancer: A Single Tertiary Canadian Oncology Center Experience

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Department of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
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Department of Hemato-Oncology, Université de Montréal, Montreal, QC H3T 1J4, Canada
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Centre Intégré de Cancérologie du CHUM, Université de Montréal, Montreal, QC H2X 3E4, Canada
4
Centre de Recherche du CHUM, Université de Montréal, Montreal, QC H2X 0A9, Canada
*
Authors to whom correspondence should be addressed.
Curr. Oncol. 2022, 29(5), 3282-3290; https://doi.org/10.3390/curroncol29050268
Received: 6 April 2022 / Revised: 29 April 2022 / Accepted: 3 May 2022 / Published: 4 May 2022
(This article belongs to the Section Gastrointestinal Oncology)
Background: Public health measures have imposed drastic reductions in cancer screening programs at the beginning of the COVID-19 pandemic, with an unknown impact on the diagnosis and staging of colorectal cancer (CRC). Methods: Newly diagnosed CRC cases at the Centre Hospitalier de l’Université de Montréal (CHUM) were divided into two groups according to the timeline: pre-pandemic (1 January 2018–12 March 2020), and pandemic (13 March 2020–30 June 2021) periods. Colonoscopy, surgery, and staging at diagnosis during the pandemic period were compared to the pre-pandemic period. Results: 254 CRC diagnoses were made during the pre-pandemic period in comparison to 125 during the pandemic period. Mean diagnosis rates were lower in the pandemic period (7.8 vs. 9.8 diagnoses/month, p = 0.048). Colonoscopy deadlines were less respected in the pandemic period (51.7% vs. 38.3%, p = 0.049). The rate of elective surgery did not differ (2.9 vs. 3.5 surgeries/month, p = 0.39) and mean delays were similar (58.6 vs. 60.4 days, p = 0.77). Stages at diagnosis did not differ (p = 0.17). Most of the delayed colonoscopies led to a stage 0 or I CRC (p = 0.2). Conclusion: In our center, the COVID-19 pandemic resulted in a decreased rate of CRC diagnosis and increased endoscopic delays without affecting the rate of advanced stage disease. Delays to surgery were quite similar once the CRC diagnosis was established. View Full-Text
Keywords: COVID-19; colorectal cancer; cancer screening; diagnosis COVID-19; colorectal cancer; cancer screening; diagnosis
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MDPI and ACS Style

Castonguay, M.; El Sayed, R.; Richard, C.; Vachon, M.-F.; Nassabein, R.; Charpentier, D.; Tehfé, M. COVID-19 Impact on Diagnosis and Staging of Colorectal Cancer: A Single Tertiary Canadian Oncology Center Experience. Curr. Oncol. 2022, 29, 3282-3290. https://doi.org/10.3390/curroncol29050268

AMA Style

Castonguay M, El Sayed R, Richard C, Vachon M-F, Nassabein R, Charpentier D, Tehfé M. COVID-19 Impact on Diagnosis and Staging of Colorectal Cancer: A Single Tertiary Canadian Oncology Center Experience. Current Oncology. 2022; 29(5):3282-3290. https://doi.org/10.3390/curroncol29050268

Chicago/Turabian Style

Castonguay, Mathias, Rola El Sayed, Corentin Richard, Marie-France Vachon, Rami Nassabein, Danielle Charpentier, and Mustapha Tehfé. 2022. "COVID-19 Impact on Diagnosis and Staging of Colorectal Cancer: A Single Tertiary Canadian Oncology Center Experience" Current Oncology 29, no. 5: 3282-3290. https://doi.org/10.3390/curroncol29050268

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