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Tuberc Respir Dis. 2009 Nov;67(5):467-470. Korean. Case Report.
Lee HJ , Kang JY , Yim SM , Ji EH , Kim JH , Kim SW , Lee SH , Moon HS , Lee BY .
Department of Internal Medicine, The Catholic University of Korea, College of Medicine, Seoul, Korea.
Department of Radiology, The Catholic University of Korea, College of Medicine, Seoul, Korea.

A traumatic pulmonary pseudocyst is a rare complication of blunt thoracic trauma. The clinical symptoms and signs are similar to other respiratory diseases, such as pulmonary tuberculosis. Therefore, a trauma history with the resulting radiologic and clinical findings is important for making a diagnosis. A 26-year-old male was admitted to our hospital due to cough for 3 days. The chest x-ray revealed diffuse infiltrations and a cavitary lesion at the left lung. His left chest had hit a tree as a result of motorcycle accident one day before admission. Initially, it was assumed that his symptoms and chest X-ray might be due to a tuberculosis infection. However, bronchoscopy revealed old blood clots at both lungs, particularly in the left lower lobe bronchus. A transbronchial lung biopsy showed alveolar hemorrhage. A traumatic pulmonary pseudocyst was diagnosed from his trauma history and these findings. Computed tomography of the chest performed 4 months later showed regression of the cavitary lesion.

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