Formation of a parenchymal pseudocyst following a blunt thoracic trauma

Abstract

Pulmonary pseudocyst is an uncommon condition that may occur after blunt thoracic trauma. Traumatic pulmonary pseudocysts develop in less than 3% of patients after blunt thoracic trauma. In this study we share a “formation of a pulmonary pseudocyst following a blunt thoracic trauma” case. Case presentation: A 34-year-old male patient suffering from a motor vehicle accident, who had admitted to another medical unit, was referred to our ED for advanced treatment after the first intervention. Due to wide hemopneumothorax, bilateral tube thoracostomy had been performed when patient arrived. Thorax CT revealed a pulmonary pseudocyst in the right lung beside diffuse bilateral pulmonary contusions, hemopneumothorax and rib fracture. Following necessary medical treatments, patient was admitted to the intensive care unit. After three months with clinical and radiological follow-up, traumatic pulmonary pseudocyst in the right lung was fully healed. Discussion and Conclusion: Pulmonary pseudocysts are air cysts that may occur in the lung parenchyma after blunt thoracic trauma. Around 85% of cases reported in the literature involved young and male patients. Tears occurring in the lung parenchyma are one of the underlying mechanisms of pseudocyst formation. In these cases there is no need for further treatment of these cysts which are known to recede spontaneously unless no complication occurs.