感染を疑い早期に手術を行った外傷性肺囊胞

Successful Early Surgical Treatment for Infected Traumatic Pulmonary Pseudocyst

胸部の鈍的外傷による肺の実質損傷により発生した外傷性肺囊胞に感染の合併が疑われたため，早期に手術を行い良好な結果を得た症例を経験したので報告する．

Almost all traumatic pulmonary pseudocysts （TPP）, such as cavitary pulmonary lesions after blunt chest trauma, resolve spontaneously. On the contrary, secondary infection of a TPP should be considered in the presence of purulent sputum or hemosputum and a persistent cavity. We report a case of an infected TPP that was successfully treated by early surgical treatment. A 25-year-old man was transferred to our hospital with a TPP, shown by computed tomography （CT） as having a thick-walled large cavity, after the acute phase of blunt chest trauma. Purulent hemosputum suggested infection of the cavity. Serial CT scans of the chest revealed a persistent cavity. The thick-walled large cavity was diagnosed as a secondary infection of the TPP, that is, a potential lung abscess. We resected the cavity before a systemic inflammatory reaction occurred.