SESSION TITLE: Medical Student/Resident Imaging Posters SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: October 18-21, 2020 INTRODUCTION: It is essential to pay attention to the “edges” of an image because they contain important structures and pathology. Numerous cardiothoracic studies are obtained for monitoring (lung screening) or preoperatively (prior to TAVR, CABG, etc) yet more acute findings should not be overlooked. Here, we present a patient undergoing CT angiogram found to have a partially imaged abdominal foreign body despite having no abdominal complaints. CASE PRESENTATION: A 25-year-old man with a history of known bicuspid aortic valve and a dilated aortic root presented to his cardiologist after several recent episodes of anxiety-triggered dyspnea and tachypnea. He underwent CT angiogram which reconfirmed the bicuspid aortic valve and demonstrated aneurysmal dilation of the aortic root to 4.5 x 3.9 cm at the sinotubular junction. Incidentally, a “J-shaped” metallic hyperdensity was seen within the second portion of the duodenum. The ordering provider was informed of the finding and advised to follow up with the patient for monitoring and/or intervention. DISCUSSION: Evaluating shape of this foreign object, it is characteristic of a wire-bristle from a barbecue brush1,2. Though other ingested foreign bodies such as coins, button batteries, and magnets are more commonly seen, research suggests that ingestion of wire-bristles from these brushes are responsible for 1700 emergency room visits per year and that the incidence of these ingestions is on the rise3. Because of their needle-like shape, wire bristles have a high complication rate often requiring surgical intervention. The can be found anywhere along the GI tract often causing perforation at the site. Radiologist recognition of the foreign body can lead to prompt intervention before complications occur. CONCLUSIONS: Here we present a case of a wire bristle incidentally identified on CT angiogram. Cardiothoracic imagers should be aware of the dangers of common and uncommon foreign bodies seen on thoracic imaging so they can be intervened on before catastrophic complications. Reference #1: David J. Grand, David R. Cloutier, Michael D. Beland, and William W. Mayo-Smith. Inadvertent Ingestion of Wire Bristles From a Grill Cleaning Brush: Radiologic Detection of Unsuspected Foreign Bodies. American Journal of Roentgenology 2012 198:4, 836-839. Reference #2: David J.Granda, Thomas K. Egglina, William W. Mayo-Smitha, John J. Cronana, Julie Gilchrist. Injuries from ingesting wire bristles dislodged from grill-cleaning brushes — Providence, Rhode Island, 2009–2012. Journal of Safety Research. Volume 43, Issues 5–6, December 2012, Pages 413-415. Reference #3: Baugh, T. P., Hadley, J. B., & Chang, C. W. D. (2016). Epidemiology of Wire-Bristle Grill Brush Injury in the United States, 2002-2014. Otolaryngology–Head and Neck Surgery, 154(4), 645–649. https://doi.org/10.1177/0194599815627794. DISCLOSURES: No relevant relationships by Kathleen Capaccione, source=Web Response Speaker/Speaker's Bureau relationship with Genentech Please note: $20001 - $100000 Added 06/11/2020 by Mary Salvatore, source=Web Response, value=Honoraria research grant relationship with Boehringer Ingelheim Please note: >$100000 Added 06/11/2020 by Mary Salvatore, source=Web Response, value=Grant/Research Support