Lung cancer patients should be prioritized for COVID-19 testing, according to an editorial published in Annals of Oncology.
In fact, treatment recommendations should call for baseline COVID-19 testing for all patients with lung cancer, Antonio Passaro, MD, PhD, of the European Institute of Oncology in Milan, Italy, and colleagues argued in the editorial.
“While all types of malignancies seem to be associated with high COVID-19 prevalence, morbidity, and mortality, lung cancer represents a specific scenario of cumulative risk factors for COVID-19 complications,” the authors wrote.
“[Lung cancer patients] are at a uniquely escalated risk of complications from COVID-19 due to the common features of smoking history, respiratory and cardiac disease, advanced age, and often predisposing risks from treatment, such as lung surgery and immunosuppressive chemotherapy,” said Howard (Jack) West, MD, of City of Hope Comprehensive Cancer Center in Duarte, Calif., who was not involved in the editorial.
“They also routinely experience a cough as well as chest imaging that may overlap between their underlying lung cancer, possible side effects of treatment, and potential COVID-19, leading to troubling ambiguity that can only be addressed by proactive and widespread testing of patients with lung cancer at the earliest opportunity and as a very high priority,” Dr. West added.
Dr. Passaro and colleagues’ editorial outlined these and other issues that suggest a need to prioritize testing in lung cancer patients.
Disease characteristics, treatment, and imaging
Lung cancer patients may have “defective pulmonary architecture,” such as mechanical obstruction from a tumor or previous lung surgery, that predisposes them to infection and can increase the risk of cytokine release. This is a concern because massive cytokine release during SARS-CoV-2 infection “has been postulated to be the major step in leading to the development of ARDS [acute respiratory distress syndrome],” Dr. Passaro and colleagues wrote.
The authors also argued that similar clinical symptoms among lung cancer patients and those with COVID-19 – such as cough, fever, and dyspnea – underscore the need for an accurate screening model to allow for early COVID-19 detection and potentially improve outcomes.
Similarly, lung cancer patients and COVID-19 patients may have overlapping findings on imaging. The radiologic effects of some common treatments for lung cancer can lead to the same kind of ground glass opacities and other findings seen in COVID-19 patients. Therefore, the authors predict an increase in “COVID-19-suspicious imaging, even in the absence of new symptoms” in the coming weeks.
Another issue to consider is the frequent use of corticosteroids in cancer patients. Corticosteroids may be harmful when used for COVID-19–related acute respiratory distress syndrome and could mask early symptoms of infection. Therefore, routine COVID-19 testing in patients receiving steroids may be warranted, according to Dr. Passaro and colleagues.
In addition, immunosuppression associated with cancer treatment “may impose specific consideration on the schedule and dose of cytotoxic chemotherapy for lung cancer patients in epidemic areas,” the authors wrote.