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首页> 外文期刊>Neurosurgery >Midline Filum of the Sellar Dura: A Useful Landmark During Endoscopic Transsphenoidal Pituitary Surgery
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Midline Filum of the Sellar Dura: A Useful Landmark During Endoscopic Transsphenoidal Pituitary Surgery

机译:鞍硬脑膜中线韧带:内镜经蝶窦垂体手术的有用地标。

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摘要

During endoscopic transsphenoidal pituitary surgery, identification and constant awareness of the midline is imperative to prevent injury to critical lateral structures, such as the internal carotid arteries.OBJECTIVE: To describe the relevance of a midline filum of the sellar dura which, when present, can serve as a useful intraoperative anatomic marker.METHODS: Intraoperative video recordings of twenty patients undergoing endoscopic transsphenoidal surgery were retrospectively reviewed to assess for the presence and location of a midline dural filum or apparent central dural vascular structure. Prospective intraoperative data were gathered on an additional 16 patients. RESULTS: A midline dural filum was identified in 18 of 36 patients (50%) undergoing endoscopic transsphenoidal surgery. This structure was identified on the midline in all cases, as confirmed by intraoperative neuronavigation and comparison with the vomer. The midline dural filum was identified as a strand-like dural extension (13 patients) or as a small vascular dural structure usually exhibiting low pressure venous bleeding (5 patients). Samples of the midline dural filum were obtained from 2 patients for histo-pathological analysis, which demonstrated dense collagenous connective tissue without evidence of vessel wall or ductal epithelium.CONCLUSION: In addition to anatomic structures such as the vomer and midline sphenoid sinus septations, a midline dural filum serves as a useful marker during the sellar phase of endoscopic transsphenoidal surgery. Along with intraoperative neuronavigation and Doppler ultrasonography of the cavernous carotid arteries, identification of this structure may further aid in safeguarding against injury to critical paramedian structures.
机译:内镜经蝶窦垂体手术期间,必须对中线进行识别和不断了解,以防止对关键的侧部结构(例如颈内动脉)造成伤害。目的:描述足底硬膜中线韧带的相关性(如果存在)方法:回顾性回顾20例接受内镜经蝶窦手术的患者的术中视频记录,以评估中线硬脑膜或明显的中央硬脑膜血管结构的存在和位置。收集了另外16名患者的术中预期数据。结果:在接受内镜经蝶窦手术的36例患者中,有18例(50%)发现了中线硬脑膜。通过术中神经导航和与犁骨的比较证实了在所有情况下均在中线鉴定出这种结构。中线硬脑膜被确认为股状硬脑膜延伸(13例)或通常表现出低压静脉出血的小血管硬膜结构(5例)。从2例患者中线硬脑膜样本中进行组织病理学分析,结果显示致密的胶原结缔组织,没有血管壁或导管上皮的证据。结论:除了解剖结构,例如犁骨和中线蝶窦分隔外,中线硬脑膜在内窥镜经蝶窦手术的蝶鞍期用作有用的标记物。术中神经导航和海绵状颈动脉的多普勒超声检查,这种结构的识别可能进一步有助于防止对重要的旁中部结构的伤害。

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