SESSION TITLE: Tuesday Medical Student/Resident Case Report Posters SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: 10/22/2019 01:00 PM - 02:00 PM INTRODUCTION: A broncho-cutaneous fistula is a pathologic communication between the bronchus, pleural space, and subcutaneous tissue. Positive pressure ventilation, pneumonectomy, and thoracotomy are known causes of broncho-cutaneous fistula formation. Although broncho-cutaneous fistulas are benign, they can be disturbing to the patient and can lead to further serious pulmonary infections. Occlusion of the air leak is essential for adequate healing of the fistula. CASE PRESENTATION: We report a case of a sixty-one year-old-male with a past medical history of diabetes, chronic liver disease and chronic pancreatitis, who was admitted to the intensive care unit due to sepsis secondary to a large left lower lobe empyema. In addition to antibiotics, he required a left-sided thoracotomy, three cavity washouts and ultimately an Eloesser flap in order to achieve complete evacuation of the empyema. After a long hospitalization the patient was discharged home. Five years later the patient was referred by general surgery to our interventional pulmonology service with a chief complaint of air leaking through his non-healing thoracic wound but no other symptoms. A computerized tomographic scan of the chest demonstrated post-surgical changes of the left thoracic wall, which raised concern for a broncho-cutaneous tract formation. The patient was scheduled for an elective bronchoscopy and a broncho-cutaneous fistula was found in the lateral basal segment of the left lower lobe using methylene blue. After localization of the fistulous tract, the entrance to the affected segment was tattooed and two endobronchial valves were placed, Figures 1, 2. The patient was discharged home and complete resolution of the symptoms was reported in the subsequent follow-up visits. Additional imaging studies and a bronchoscopy two months later confirmed the successful closure of the bronco-cutaneous tract. DISCUSSION: Although surgery remains the mainstay treatment of broncho-cutaneous fistula, it may be a high-risk procedure in patients with poor health status or active infection. In these cases, bronchoscopy with various closure methods has been proposed as an alternative treatment. Identification of the broncho-cutaneous fistula can represent a major challenge, as bronchoscopy alone does not consistently identify the anatomic defect. Thus, using a combination of fiberoptic bronchoscopy and a liquid colorant such as methylene blue can be a useful method of diagnosis. Once the location is identified, several devices including histo-acril glue, valves, and stents, can be used to seal the leak. CONCLUSIONS: Endoscopic repair of broncho-cutaneous fistulas is a great therapeutic option in patients where a surgical approach is not possible or represents a very high risk to the patient. Timely and adequate management of these anatomic abnormalities is key in the prevention of serious complications such as severe pulmonary infections. Reference #1: Lois M, Noppen M. Bronchopleural fistulas: an overview of the problem with special focus on endoscopic management. Chest. 2005;128(6):3955–3965. Reference #2: Varoli F, Mariani CL, Fascianella A. Methylene blue in bronchial fibroscopy. Minerva Medica. 1984;75(36):2099–2100. Reference #3: John SK1, Jacob S, Piskorowski T. Bronchocutaneous fistula after chest-tube placement: A rare complication of tube thoracostomy.Heart Lung. 2005 Jul-Aug;34(4):279-81. DISCLOSURES: No relevant relationships by Cinthya Carrasco Barcenas, source=Web Response No relevant relationships by Haneen Mallah, source=Web Response No relevant relationships by Rita Medrano Juarez, source=Web Response No relevant relationships by Brittany Rosales, source=Web Response No relevant relationships by Wasawat Vutthikraivit, source=Web Response No relevant relationships by Andres Yepes-Hurtado, source=Web Response