Pneumothorax and XXXX .

@entity1 @entity1614 @entity5229 @entity4530
BACKGROUND: Increased risk of @entity5229 has been described in @entity1 with @entity1614 and has been attributed, in part, to the presence of @entity4530 and bullae. OBJECTIVES: We assess the risk of pneumothorax and its relationship to the presence of @entity4530 and bullae in @entity1 with @entity1614 in the era of CT imaging. METHODS: A retrospective cohort study was performed of all @entity1 13 years or older with @entity1614 evaluated at the Mayo Clinic, Rochester, Minn., USA, from 1998 through 2008. One hundred and sixty-six @entity1 met the current diagnostic criteria for @entity1614 and had chest imaging studies available for review. RESULTS: The median age was 40 years (range 14-71); 37% had a smoking history. Eight of 166 @entity1 (4.8%) had experienced 1 or more episodes of @entity5229 , and 2 of these 8 @entity1 had 2 or more episodes. @entity4530 or bullae were identified on radiologic imaging in 16 @entity1 (9.6%). Four of 16 (25%) @entity1 with @entity4530 or bullae had a history of @entity5229 compared to 4 of 150 @entity1 (2.7%) without @entity4530 or bullae (p = 0.003). CONCLUSIONS: The frequency of @entity4530 is relatively low in @entity1 with @entity1614 but the risk of pneumothorax is significantly higher in those with radiologically detectable @entity4530 or bullae. Chest CT scanning to identify @entity4530 and bullae may allow risk stratification for pneumothorax in @entity1 with @entity1614 .
