Results:10 cases with airway stenosis were found, 6 cases tracheoesophageal fistula and 8 cases pulmonary hemorrhage.

• 结果:明确诊断气道狭窄10例;食道气管瘘6例;肺出血8例;肺泡灌洗液细菌培养45例次；31例次有细菌生长；阳性率68.；89%25;