Occurrence and Outcomes of Acute Cerebrovascular Events in Patients with Non-Hodgkin Lymphoma

Author:

Ostos Catherine12,Velez Quinones Virginia3,Menchaca Kristina24,Jones Can25,Duchow Mariel2,Isaac Shaun6,Hardigan Patrick7

Affiliation:

1. 1National Cancer Institute - Hematology Oncology Clinical Fellowship, National Institutes of Health, Bethesda, MD

2. 2Internal Medicine, University of Miami /JFK Medical Center Palm Beach Regional GME Consortium Internal Medicine program, West Palm Beach, FL

3. 3Internal Medicine, University of Miami /JFK Medical Center Palm Beach Regional GME Consortium Internal Medicine program, Lantana, FL

4. 4Cardiovascular Disease, Mayo Clinic - Rochester, Rochester, MN

5. 5Hematology and Oncology, Memorial Healthcare System, Hollywood, FL

6. 6Internal Medicine, University of Miami Miller School of Medicine, West Palm Beach, FL

7. 7Kiran Patel College of Medicine - Statistics Center, Nova Southeastern University, Fort Lauderdale, FL

Abstract

Background Stroke or Cerebrovascular Accident (CVA) is one of the leading causes of mortality in the world whether it be ischemic or hemorrhagic 1,2. There has been an association of increased incidence of stroke in patients with cancer due to multiple factors 3. Regarding hematologic malignancies, there have been studies to assess the risk of developing stroke in patients with Hodgkin lymphoma (HL), however the information on non-Hodgkin lymphoma (NHL) is limited and not well understood4. We conducted a retrospective case-control study to assess the incidence, risks, and complications and length of stay of patients with current or prior history of NHL who developed an ischemic stroke. Methods This case-control study identified 29,632 patients older than 18 years, with or without CVA and with or without active or history of Non-Hodgkin Lymphoma (NHL) who were admitted to diverse private hospitals between 2018-2022. The patients were divided into two groups, one with current or prior NHL (n=10,699) and a control group of patients (n=18,933) with similar characteristics. Patients with active hemorrhagic stroke, pregnancy, malignancies other than NHL, prior hemorrhagic or ischemic stroke, infective endocarditis, atrial fibrillation, and acute coronary syndrome on admission were excluded. We compared patient's characteristics and the risk of developing a stroke based on the presence or absence of NHL as well as the factors that increased hospital mortality. Length of stay was evaluated as a secondary outcome. Bivariate statistical analysis was used to calculate the odds ratios using RStudio 4.2.2 and JMP Pro 16.0 for all data analysis. Results Of the group with NHL 46.39 % (n=4958) were female, and 53.61% (n=5729) were male, 42% were current or former smokers (n=4497), 27.49% (n=2941) had diabetes, 44.68% (n=4780) had hypertension; 3.34% (357) of them passed away. Of the control group 57.51 % (n=10876) were female, and 42.49% (n=8036) were male, 35% were current or former smokers (n=6763), 16.43% (n=3111) had diabetes, 28.89% (n=5469) had hypertension; 0.47% (n=88) of them passed away. The mean length of stay of patients with stroke was 7.99 days in the NHL group, and 5.99 days in the control group. Regarding the admissions due to stroke, there were 214 patients in the group with NHL, and in the control group where there were 113. Patients with NHL are more likely to have a CVA compared to the control group (OR 2.39 p<0.0001 CI 1.47~3.85) Patients who have NHL are more likely to die (OR=6.08 p<0.001) CI 4.77~7.74) compared to patients without NHL from all causes. Conclusion Patients with Non-Hodgkin lymphoma have an increased risk of developing a stroke compared to patients with similar characteristics but without NHL (or other malignancies). It was also noted that patients had an increased length of stay. Other variables and characteristics of patients that were identified to be more likely to have a CVA and statistically significant for this sample are already well-known risk factors for CVA including diabetes, hypertension, and cardiovascular disease. However, this study aimed to isolate those variables to identify the risk for stroke in this unique population. Our study limitation is the broad spectrum of NHL and possible confounders between the different variants of NHL. More studies are needed to investigate this. References Navi B, Reiner A, Kamel H, et al. Risk of Arterial Thromboembolism in Patients with Cancer. J Am Coll Cardiol. 2017 Aug, 70 (8) 926-938.Turner, M., Murchie, P., Derby, S. et al. Is stroke incidence increased in survivors of adult cancers? A systematic review and meta-analysis. J Cancer Surviv 16, 1414-1448 (2022). https://doi.org/10.1007/s11764-021-01122-7Dardiotis E, Aloizou AM, Markoula S, et al. Cancer-associated stroke: Pathophysiology, detection, and management (Review). Int J Oncol. 2019;54(3):779-796. doi:10.3892/ijo.2019.4669Wei Y, Yang Q, Qin Q, et al. Profiling of the Risk Factors and Designing of a Model to Identify Ischemic Stroke in Patients with Non-Hodgkin Lymphoma: A Multicenter Retrospective Study. Eur Neurol. 2020;83(1):41-48. doi:10.1159/000506046

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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