Soft tissue structures may herniate into the maxillary sinus, leading to entrapment and vertical diplopia (arrow).
软组织结构可能会疝入上颌窦中，导致局部压迫和垂直性复视（箭头所指）。
Results: A 39-year-old female patient complained of vertical diplopia and pain in right trochlear region for 2 weeks.
结果：一39岁女性因纵向之复视，合并右眼滑车部位疼痛而就诊。
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