SESSION TITLE: Medical Student/Resident Signs and Symptoms of Chest Disease Posters SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: October 18-21, 2020 INTRODUCTION: A nephropleural fistula is an abnormal connection between renal parenchyma and pleural lining, it’s a known complication of percutaneous nephrolithotomy (PCNL) which can happen in both immediate and delayed setting (1). We describe a case of 88-year-old female who developed this fistula 2 days after the procedure. CASE PRESENTATION: 87-year-old female with a past medical history of recurrent UTIs and right nephrolithiasis presented with right sided flank pain. CT abdomen pelvis showed 8 mm right ureteral calculus and mild right hydronephrosis. Urine and blood cultures grew E. coli. She was diagnosed with urosepsis and treated with IV ceftriaxone. She required a right ureteric stent and patient was discharged home. A few weeks later, the patient was admitted to the hospital for a cystoscopy and replacement of her right sided JJ stent. She underwent right sided percutaneous nephrolithotomy. On Post-op day 2, the patient started to develop hypoxemia while ambulating, and required 3L nasal canula to maintain oxygen saturation >95%. Chest X ray revealed new bilateral pleural fluid collections. Patients hemoglobin dropped from 11.9 to 6.6. CT scan of the chest showed moderate to large right basilar hemothorax with a communication between right kidney to the right pleural cavity. Thoracic surgery was consulted for evaluation/management of right hemothorax. The patient required a video-assisted thoracoscopic surgery procedure with hemothorax evacuation and intercostal tube placement and drainage. The patient's condition improved, and the chest tube was removed with closure of the nephropleural fistula. Deemed medically fit to be discharged with follow up for the removal of her JJ stent through cystoscopy. DISCUSSION: Iatrogenic nephro-pleural fistula is a very rare but potentially life-threatening complication following PCNL. There are only a handful of case reports in the current literature. Most often occurring in the immediate phase during intraoperative fluoroscopy (1). The direct connection created intra-operatively between the thoracic cavity and renal collecting system allows the build up of fluid and urine into the chest. This can potentially lead to the development of pleural effusions and invariably compromising respiratory function & status. Most fistulas can be managed conservatively with the use of thoracentesis without the need for further surgical intervention. However rarely more aggressive treatment is required including temporary chest tube placement with or without pleurodesis for recurrent/refractory fistulas(2). CONCLUSIONS: This case highlights the importance of a considering a delayed nephropleural fistula following an uneventful PCNL in patients complaining of respiratory symptoms following stent removal. A delayed nephropleural fistula should be considered in any patient that develops shortness of breath, increasing oxygen requirement or evidence of pleural effusions. Reference #1: Kaler, K. S., Cwikla, D., & Clayman, R. V. (2016). Delayed Nephropleural Fistula After Percutaneous Nephrolithotomy. Journal of endourology case reports, 2(1), 99–102. https://doi.org/10.1089/cren.2016.0050 Reference #2: Baugh, A. D., Youssef, E., Hasan, S. S., Siddiqui, N. S., Elsamoloty, H., Shahrour, K., & Javaid, T. (2016). Nephropleural Fistula Effectively Managed with Serial Thoracentesis: A Case Report. Journal of endourology case reports, 2(1), 212–214. https://doi.org/10.1089/cren.2016.0102 DISCLOSURES: No relevant relationships by Sanchit Chawla, source=Web Response No relevant relationships by hussain karimi, source=Web Response
Read full abstract