SESSION TITLE: Medical Student/Resident Imaging Posters SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: October 18-21, 2020 INTRODUCTION: Traumatic pharyngeal perforation leading to subcutaneous emphysema following ingestion of sharp foreign objects is well described in the literature. We present the case of a man who presented in respiratory distress with evidence of extensive subcutaneous emphysema who was subsequently diagnosed with occult pharyngeal microperforations. CASE PRESENTATION: A 76-year-old man with a history of essential hypertension, type 2 diabetes mellitus, schizophreniform disorder, and multiple myeloma presented to the hospital with acute onset shortness of breath, facial swelling, dysphagia, and fever. Clinically, the patient was in respiratory distress, with evidence of stridor and with palpable crepitus extending over his neck and face. Neck and chest (Figure 1) CT showed soft tissue emphysema throughout his face and neck that extended into the mediastinum. Indirect laryngoscopy revealed diffuse pharyngeal wall and epiglottic edema, with an inability to visualize the glottis and without evidence of mural tears. The patient underwent an emergent tracheostomy given the concerns for airway compromise. Based on the initial concern of possible necrotizing fasciitis, the patient received broad spectrum antibiotics. Intraoperative biopsies of the laryngopharynx showed extensive necrosis and acute inflammation without bacterial growth. Given to the patient’s rapid clinical improvement a decision was made to hold off on emergent debridement. Barium swallow demonstrated no evidence of gastrointestinal perforation. One week after admission, the patient had a bowel movement in which he was observed to have passed numerous nuts, bolts, screws, and keys from his rectum. Abdominal imaging was performed and showed that further objects were traversing through the colon (see Figures 2–3). On questioning, the patient admitted to having ingested these objects in an attempt to aid his chronic constipation. At this point, it was determined that the consumption of these foreign bodies led to transient esophageal microperforations causing initial airway compromise. DISCUSSION: Our patient underwent traumatic pharyngeal perforation which is well described in the literature, secondary to ingestion of sharp foreign objects. Although initially it was thought that the presentation was due to a necrotizing infection, the patient’s improvement after airway management and negative culture data went against this interpretation. The subsequent passage of foreign objects and confirmatory imaging allowed us to make the final diagnosis of occult pharyngeal microperforations. CONCLUSIONS: This case emphasizes the need to approach patients based on their clinical appearance. It is important to maintain a broad differential based on the clinical presentation and to have a high index of suspicion once other possible causes have been excluded. Reference #1: Lynn De Roeck, Lauranne Van Assche, Veronique Verhoeven, Ina Vrints, Jana Van Thielen, Thierry Tondu & Filip Thiessen (2019) Progressive subcutaneous emphysema of unknown origin: a surgical dilemma, Acta Chirurgica Belgica, 119:4, 251-253, DOI: 10.1080/00015458.2018.1438560 DISCLOSURES: No relevant relationships by Jason Bofinger, source=Web Response no disclosure on file for Calli Dogon; No relevant relationships by Shahrzad Zonoozi, source=Web Response