Increased Incidence Of Cancer In Japanese Patients With Critical Limb Ischemia
ANNALS OF VASCULAR DISEASES(2019)
Abstract
Objective: This multicenter observational study was conducted in order to investigate the incidence of cancer in patients with critical limb ischemia.Materials and Methods: We prospectively investigated the incidence of cancer in 68 patients with critical limb ischemia over a two-year period. Patients underwent an intensive examination at enrollment, which included tumor marker levels and chest and abdominal computed tomography, as well as one- and two-year follow-up examinations. We compared the observed incidence of cancer with the expected incidence calculated from national cancer rates by the standardized incidence ratio (SIR).Results: The majority (83.6%) of the patients were men, and 92.5% of the patients had a peripheral arterial disease that was classified as Fontaine stage III or IV. During enrollment, newly diagnosed cancers were detected in seven patients. Four additional cancers were detected during the follow-up period. All of the detected cancers were asymptomatic. We observed an increased risk of cancer (SIR, 4.04; 95% confidence interval, 1.31-9.42) in patients with critical limb ischemia.Conclusion: This study suggests that critical limb ischemia is associated with an increased risk of cancer. Our findings should be taken into serious consideration by future investigators considering the use of therapeutic angiogenesis.
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Key words
angiogenic cytokines,cancer,critical limb ischemia,revascularization,therapeutic angiogenesis
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