• Nicholas Pettit and Melisa Cinbat.
• Indiana University, School of Medicine, Department of Emergency Medicine, 720 Eskenazi Ave, FOB, 3rd Floor, Indianapolis, IN 46202, United States of America. Electronic address: NRPettit@iu.edu.
• Am J Emerg Med. 2021 Dec 1; 50: 394-398.

BackgroundObtaining a diagnosis of cancer following an emergency department (ED) visit is associated with poor outcomes and advanced stage. Limited data is available from EDs in the United States. We describe a cohort of patients that obtained a diagnosis of lung cancer because of an ED visit.MethodsThis is a single center, retrospective cohort of patients with lung cancer who presented to the ED between December 2016 and December 2019. We investigated demographics, access to primary care, previous cancer screening, cancer type/stage, mortality, and imaging study that suggested cancer. The primary outcome is the percentage of lung cancer diagnoses over a 4-year period that resulted from an ED visit.ResultsAmong the 268 patients with lung cancer, 152 patients (57.6%) had presented to the ED with a workup that was concerning for lung cancer. Patients were generally elderly (median 62-years old), African American (n = 77, 51%), and smokers (n = 145, 95.4%) with a median smoking pack years of 40. Only 24 patients (15.8%) had seen a primary care physician within 1 year of diagnosis, and only 8 patients were appropriately screened for lung cancer. The most common type of cancer was non-small-cell carcinoma (111, 73.0%), with 61.3% of those being adenocarcinoma (n = 68). Patients were most likely to be stage IV (n = 86, 56.6%), and the overall mortality was 53.3% (n = 81, 1 year follow-up). Most patients (88/152, 57.9%) of patients were admitted to the hospital, and Medicare patients (OR 2.7, 95% CI 1.37-5.23) and patients with stage IV disease (OR 2.22, 95% CI1.15-4.29) were more likely to be admitted. Patients were more likely to have a concerning finding on computed tomography (CT) versus chest x-ray (55.9% versus 36.8%, respectively). CT scan reports were more likely to mention malignancy (OR 5.9, 95% CI 2.5-14.0) or metastasis (OR 30, 95% CI 7.1-127.1) than chest x-ray.ConclusionPatients that have lung cancer diagnosed through the ED are more likely to be advanced stage at time of diagnosis and are more likely to have CT scans demonstrate concerning findings. Given the lack of previous cancer screening, the advanced stage at presentation of lung cancer to the ED, and high mortality rates, the ED may serve a public health role in addressing lung cancer screening.Copyright © 2021 Elsevier Inc. All rights reserved.

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