第七节主动脉弓异常主动脉弓异常（abnormalitiesoftheaorticarch）指主动脉弓及其分支发育异常。
O O O B-dis I-dis I-dis I-dis I-dis I-dis B-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O O B-bod I-bod I-bod I-bod I-bod I-bod I-bod I-bod O O O O O