肺动脉悬带和气管呈完整的环状软骨性狭窄,均为极少见的畸形,合并存在则更少见。Berdon等[Radiology 1984,152:57.]建议称其为环—悬带综合征(Ring-sling complex)。例1 女婴4月,因咳喘一月余和呼吸困难3天入院。一月余前曾住某医院,诊断为肺炎和营养不良等,经治疗6天后好转出院。本次入院前1周上述症状反复出现并进行性加重。家族史:母有哮喘史,兄6月时死于“先天性心脏病”。体检:T:36.7℃;P:180次 Pulmonary artery sling and trachea showed complete annular cartilage stenosis, are extremely rare deformity, the merger is even more rare. Berdon et al [Radiology 1984, 152: 57.] Suggest it as a ring-sling complex. Example 1 baby girl in April, due to cough and asthma more than one month and 3 days admitted to hospital. I had lived in a hospital a month ago, diagnosed as pneumonia and malnutrition, etc., after 6 days of treatment improved discharge. One week before admission, the above symptoms repeatedly appear and worsen. Family history: the mother has a history of asthma, brother died in June of “congenital heart disease.” Physical examination: T: 36.7 ℃; P: 180 times