Result:MRI accuracy rate was 16/20 in cases showing lobar bronchial obstruction, 4/4 for cases showing stenosis.
结果：MRI显示叶支气管闭塞准确率16／20例，显示叶支气管狭窄准确率4／4例。
CT scan showed foreign body was located in right main bronchial 12 cases, right middle bronchial 1 case, right inferior lobar bronchial 2 cases and left main bronchial 6 cases.
结果患儿均显示异物的直接征象，CT显示异物位于右肺主支气管12例，右中间支气管1例，右下叶支气管2例，左肺主支气管6例。
Objective to summarize the ct signs and clinic characteristics to improve the ct diagnoses ability on the lobar bronchial intraluminal cancer and provide a well comprehension for it.
目的总结叶支气管腔内癌的CT征象及其临床特点，提高对本病的认识和诊断水平。
Lobar emphysema may result from partial bronchial obstruction.
大叶性肺气肿可由于局部小支气管梗阻所引起。
Of the 5 lobar consolidation-type in 3 cases, 5 had air bronchogram, and 2 had ground-glass opacities, and 1 had bronchial lumen obstruction.
肺叶实变型3例5个病灶，实变区内均见支气管充气征，其中边缘见磨玻璃征2个病灶，支气管腔明显狭窄阻塞1个病灶；
Of the 5 lobar consolidation-type in 3 cases, 5 had air bronchogram, and 2 had ground-glass opacities, and 1 had bronchial lumen obstruction.
肺叶实变型3例5个病灶，实变区内均见支气管充气征，其中边缘见磨玻璃征2个病灶，支气管腔明显狭窄阻塞1个病灶；
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