• Scott A McAninch, Clinton Smithson, Andrew L Juergens, Jason N Collins, and Amrita Nanda.
• Department of Emergency Medicine, Scott and White Medical Center - Temple, Texas A&M Health Science Center College of Medicine, Temple, Texas.
• J Emerg Med. 2018 Feb 1; 54 (2): 229-231.

BackgroundSternoclavicular joint infection (SJI), to include septic arthritis (SA), is a rare cause of chest pain and is often found in patients with significant risk factors and sources for SA. Most acute care laboratory results lack significant sensitivity to rule out SA. Radiographic findings in common acute care imaging often does not reveal findings of SA and osteomyelitis in the acute phase of the infection.Case ReportWe present a patient without significant risk factors for SA, who initially presented with 3 days of pain to the left chest, left neck and shoulder. He had fever and was treated with a short course of antibiotics for possible pneumonia. His symptoms recurred along with fever 36 days after the initial onset of symptoms and was then diagnosed radiographically with left-sided SJI. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: This case reinforces the need to maintain a broad differential diagnosis in the evaluation for chest pain and pursue advanced imaging, such as magnetic resonance imaging, when the pretest probability of SJI is high, especially in the acute phase of the infection.Copyright © 2017 Elsevier Inc. All rights reserved.

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