为位于手背外侧部的浅凹，在拇指充分外展并后伸时明显。其桡侧界为拇长展肌腱和拇短伸肌腱，尺侧界为拇长伸肌腱，近侧界为桡骨茎突，窝底为手舟骨和大多角骨，窝内有桡动脉通过，可扪及其搏动。
结果肿块突入鼻咽腔致咽隐窝变平、消失或两侧不对称37例，为最常见表现；
Results 37 cases with masses invading nasopharyngeal cavity, and blunting or loss or asymmetry of Rosenmuller fossa were the most common manifestation;
结论：经硬腭-唇龈联合路径切除上颌结节部和部分上颌窦后外侧壁及翼突内外板是治疗突入翼腭窝鼻咽纤维血管瘤的有效方法。
Conclusion: The approach from palatum durum chilogum seems to have a salutary effect on resecting the maxillary tuberosity and part of retrolateral wall of the genyantrum.
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