SESSION TITLE: Medical Student/Resident Procedures SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: 10/09/2018 01:15 PM - 02:15 PM INTRODUCTION: Pill aspiration is uncommon in adults, comprising 2.8% of foreign body aspirations. Symptoms and signs are nonspecific and chest x-rays can be normal in 25% of cases. It can cause airway obstruction, inflammation and stenosis leaving long-term sequelae. Having a high suspicion and doing bronchoscopy early is important in avoiding any long-term sequelae. Here we report a challenging case of bronchus obstruction by magnesium oxide pill aspiration. CASE PRESENTATION: A 60-year-old female presented to the emergency department (ED) at an outside hospital with irritation and cough after choking on a magnesium pill. Chest x-ray did not show any abnormalities so patient was discharged home with instructions to follow up with her primary care physician (PCP). Over the next 2-3 days, she had low-grade fever, coughing fits which brought up bits of the tablet and shortness of breath. She saw her PCP the next day and was given azithromycin. That night, she had a fever of 38.8C and came in to our ED. Vital signs were stable except for oxygen saturation of 91% on room air. She had decreased breath sounds on right mid-to-lower lung field. The remainder of her exam was unremarkable. Chest x-ray showed right middle lobe infiltrates. CT chest revealed a 9x9mm radio-opaque density in the right bronchus intermedius, scattered areas of ground glass opacities and atelectasis in the right middle lobe. She underwent flexible bronchoscopy that showed a white ball-like foreign body near-obstructing the right bronchus intermedius. Mucosa was edematous with mild inflammation, no necrosis or stenosis was noted. The foreign body was successfully removed with grasping forceps in a few smaller pieces (biggest 9 x 7 mm). They were hard, white and chalky, consistent with the magnesium oxide pill. The next day, she reported improvement in her cough and shortness of breath. Her oxygen saturation had improved to 96% on room air and she was discharged home in stable condition. DISCUSSION: Adult patients can present with a clear history of the aspiration event. Symptoms and signs are nonspecific and chest x-rays can be normal in 25% of cases, making the diagnosis challenging. Our patient felt the choking sensation and sought medical attention. Despite her history and due to normal chest x-ray and nonspecific symptoms of cough and normal vital signs, she was initially discharged home without further investigation. In the cases where patients remember a specific aspiration event, despite nonspecific symptoms and normal chest x-ray, further investigation with CT imaging or bronchoscopy should be sought. Left untreated it is possible that there may be further damage to the bronchus through inflammation. CONCLUSIONS: There has been no documentation of the effects of magnesium oxide pill aspiration on the bronchial mucosa. Early bronchoscopy with intervention to remove the pill is important in avoiding any long-term complications. Reference #1: Singh I, Dm S, Dm SD, Ram B. Foreign Body Inhalation in the Adult Population : Experience of 25 , 998 Bronchoscopies and Systematic Review of the Literature. 2015:1438-1448. https://doi.org/10.4187/respcare.03976. Reference #2: Kupeli E, Khemasuwan D, Tunsupon P, Mehta AC. “ Pills ” and the Air Passages, A Continuum. Chest. 2015;147(1):242-250. https://doi.org/10.1378/chest.14-0531. Reference #3: Kinsey CM, Folch E, Majid A, Channick CL. Evaluation and Management of Pill Aspiration. CHEST. 2013;143(6):1791-1795. https://doi.org/10.1378/chest.12-1571. DISCLOSURES: no disclosure on file for Ji Hyun Rhee; No relevant relationships by Jack Tomen, source=Web Response