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目的:探讨植物性气管、支气管异物容易发生的部位及形成机理，并讨论其Ｘ线诊断。资料与方法：选取经纤维支气管镜取出证实、资料完整的３０例，男１８例，女１２例，最大年龄４ 岁，最小年龄１１个月，平均约２ 岁，临床上全部有吸入异物史，病史最长者３个月，最短者２０分钟，主要症状为吸入异物后剧烈咳嗽和气管内“呼噜”声、发憋等，病史长者可出现发热等症状。方法：采用胸片前后位并结合胸部透视观察。结果：左侧支气管异物１７例（约占５７％）；右侧支气管异物５例（约占１７％），气管内下端７例，声门处１例，共计８例（约占２７％）；花生米性异物或其碎块２０例，瓜子性９例，豆粒１例。 结论：胸片双肺对比结合胸部透视双膈对比是植物性气管支气管异物定位的最佳方法，“轻型”支气管异物宜停留在左侧。
OBJECTIVE: To explore the site and mechanism of plant trachea and bronchial foreign body that are prone to occur and to discuss its X-ray diagnosis. Materials and Methods: Thirty patients with complete data, including 18 males and 12 females, with a maximum age of 4 years and a minimum age of 11 months, with an average age of about 2 years, were selected for bronchofibroscopy. All patients had history of inhaled foreign body, The longest history of 3 months, the shortest of 20 minutes, the main symptoms of inhaled foreign body after a violent cough and tracheal “snoring” sound, hair hold, etc., the history of the elderly may be fever and other symptoms. Methods: Anteroposterior radiography and chest radiography were used. Results: There were 17 cases of bronchial foreign body on the left (about 57%), 5 cases of bronchial foreign body on the right (about 17%), 7 cases of inferior tracheal and 1 glottis, accounting for 27%. 20 cases of peanut foreign body or its fragments, melon seeds in 9 cases, beans in 1 case. CONCLUSIONS: The contrast of chest radiographs with double chest radiographs is the best method for the localization of plant tracheal bronchial foreign bodies. The “light” bronchial foreign bodies should stay on the left side.