1. The nodules are usually in the periphery and do not cause major obstruction. 此结节通常位于肺组织的周边部，一般不引起主要的阻塞。
2. Methods The spiral CT manifestations of 28 cases with intestinal mechanical obstruction proved by operation or clinically were analyzed. 方法对28例手术或临床证实的机械性肠梗阻病员的螺旋CT表现进行分析。
3. Bronchiectasis:ABnormal expansion of Bronchi in the lungs. It usually results when preexisting lung disease causes Bronchial inflammation and obstruction. 支气管扩张：肺内支气管的异常扩张。通常源于原有肺部疾患造成支气管发炎和阻塞。
英英解释
n.
1. any structure that makes progress difficult
2. the state or condition of being obstructed
3. something immaterial that stands in the way and must be circumvented or surmounted
4. the act of obstructing
5. getting in someone's way
