Abstract
Cancer is the leading cause of death in European countries, ahead of cardiovascular diseases. Cancer is also the most common co-morbidity among patients hospitalized for the management of cardiovascular diseases. Through an overview, we searched for the frequency and types of cancer associated with peripheral arterial disease (PAD) in order to address the relevance of cancer screening in patients with PAD. We searched in PubMed database from 1996 to 2020 for retrospective and prospective cohort or cross-sectional or randomized studies evaluating the frequency of all types of cancer in patients with PAD excluding patients with aneurysmal disease. The keywords used were: peripheral arterial disease, arterial thrombosis, acute leg ischemia, critical leg ischemia, chronic leg ischemia, intermittent claudication, malignant tumor, cancer. Based on published studies, the frequency of cancer in patients with PAD varied widely from 3.8 to 30.4% depending on study design, population, method used to screen for cancer and study period. In medical records database and registers,cancer prevalence varied from 3,8% to 22,4% in 4 retrospective studies of patients with acute limb ischemia and from 10.5 to 30.4% in 3 prospective studies of patients with acute limb ischemia, critical ischemia or intermittent claudication. In 3 retrospective analyses from 2 population-based cohorts and health insurance claims data, incidence of cancer in patients with intermittent claudication, acute limb ischemia or peripheral arterial disease varied from 8% to 11.7%. The frequency of cancer in PAD patients appeared higher than in the general population. Tobacco-dependent cancers seemed to be the most common cancers in PAD. Cancers were also more frequent in case of anemia, amputation and iterative bypass thrombosis in few studies. Although there is no recommendation for cancer screening in patients with PAD, the high prevalence of cancer raises the question of screening patients at high risk such as those with acute or critical limb ischemia and especially in case of severe tobacco use, anemia, amputation and iterative bypass thrombosis. These results call for further studies with larger sample size and long term follow-up.
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