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Research Letter

COVID-19 Pandemic and Posttreatment Breast Cancer Surveillance and Outcomes

JAMA Oncology 10.1001/jamaoncol.2025.1991

July 17, 2025 at 11:00 AM EDT

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This Research Letter compares use of surveillance imaging in pre–COVID-19 and post–COVID-19 periods for patients with an early-stage breast cancer diagnosis within a large integrated health care system.

Corresponding Author: Erin E. Hahn, PhD, MPH, Kaiser Permanente Research and Evaluation, 100 S Los Robles Ave, Pasadena, CA 91101 (erin.e.hahn@kp.org).

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