The novel coronavirus, also known as SARS-Cov-2 or COVID-19 has become a worldwide threat and the major healthcare concern of the year 2020. Cancer research was directly affected by the emerging of this disease. According to some Chinese studies, cancer patients are more vulnerable to COVID-19 complications. This observation led many oncologists to change their daily practice in cancer care, without solid evidence and recommendations. Moreover, the COVID-19 manifestations as well as its diagnosis are particular in this special population. In this review paper we expose the challenges of cancer management in the era of SARS-CoV-2, the epidemiological, clinical, pathological and radiological characteristics of the disease in cancer patients and its outcomes on this population. Finally, we focus on strategies that are followed in cancer management with review of national and international guidelines. J o u r n a l P r e -p r o o f electronic search of the literature was conducted in the PubMed database until the 5th of April 2020. The following keywords with Boolean operators were used 'covid-19', 'novel coronavirus'and 'SARS-CoV-2' in combination with 'cancer', 'neoplasm', 'oncology' and 'malignancy'. A total of 223 articles were extracted. We included articles in English as well as articles in French because we are familiar with this language. Abstracts in English of articles in Chinese language were also J o u r n a l P r e -p r o o f 3 included. Duplicated articles and articles that were published before the era of SARS-Cov-2 (i.e., before December 2019) were excluded. Titles and abstracts of retrieved articles were screened for eligibility, and then entire texts were analyzed and 88 papers that respond to our objectives were included in this review. Our work is summarized in the PRISMA diagram below.
ResultsOut of 88 articles, six were in French language and 19 were in Chinese language with English abstracts. Most of the papers consisted of short editorials, letters, correspondence or comments.Ten Cohort studies were identified (retrospective, prospective or cross-sectional analysis) as well as 9 case reports and one case series. Only four of the cohort studies exclusively included cancer patients. Of note, all cohort studies were conducted in China. Most of the reported cases originated from China and Italy.59% of the published papers originated from China and Italy (52 of 88). Seven works were multinational and the majority of them were multicontinental, issued in collaboration between researchers from Asia, Europe and the Americas. We identified one article originating from each of the following countries: Canada, India, Singapore, Spain and Saudi Arabia. The pie chart below