title: Clinical features of systemic cancer patients with acute cerebral infarction and its underlying pathogenesis.
abstract: BACKGROUND
  The increased incidence of cerebral infarction in patients with systemic cancer has been reported; however, the underline mechanisms remain unclear. Investigation regarding the clinical features of cerebral infarction in cancer patients could be helpful to understand its underlying pathogenesis.
  
  
  METHODS
  A total of 537 patients were recruited and divided into three groups: 1) stroke and cancer group (SCG), defined as active cancer patients with acute cerebral infarction; 2) stroke group (SG), defined as acute cerebral infarction patients without cancer; and 3) Cancer group (CG), defined as active cancer patients without cerebral infarction. These patients were age and gender-matched among groups.
  
  
  RESULTS
  179 patients, including 128 male subjects (73.68%) were enrolled in each group. Compared to SG patients, more SCG patients lacked conventional vascular risk factors (CRFs), and had elevated plasma D-dimer, cancer antigen (CA) 125 and 199 levels with multiple lesions in multiple cerebral arterial territories. In addition, SCG patients were found to have poorer prognosis. Compared to CG patients, more SCG patients' cancer had metastasized. Multiple logistic regression analysis showed that the elevated plasma D-dimer, CA125 and CA199 levels may independently increase, but chemoradiotherapy decreased the risk of cerebral infarction in cancer patients.
  
  
  CONCLUSIONS
  Our study demonstrated that the clinical features of acute cerebral infarction in most active cancer patients can be identified as multiple lesions in multiple cerebral arterial territories with elevated plasma D-dimer and the elevated levels of cancer antigens.
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Guangxi Medical University Nanning City, Guangxi Province 530021, P. R. China.
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Neurology and Stroke Centre, The First Affiliated Hospital, Sun Yat-Sen University No. 58 Zhongshan Road 2, Guangzhou, 510080, P. R. China.
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Zeng
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Guangxi Medical University Nanning City, Guangxi Province 530021, P. R. China.
authors.forename: Xingrui
authors.initials: X
authors.lastname: Xie
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Guangxi Medical University Nanning City, Guangxi Province 530021, P. R. China.
authors.forename: Zijun
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Guangxi Medical University Nanning City, Guangxi Province 530021, P. R. China.
authors.forename: Xiaoting
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Guangxi Medical University Nanning City, Guangxi Province 530021, P. R. China.
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Liang
keywords: Clinical feature; cancer; cerebral infarction; pathogenesis