Santamarta D, Aguas J, Ferrer E
Department of Neurosurgery, Hospital Clinic i Provincial Barcelona, Spain.
Minim Invasive Neurosurg. 1995 Dec;38(4):133-7. doi: 10.1055/s-2008-1053473.
Arachnoid cysts are space-occupying lesions filled with CSF-like content and surrounded by a membrane resembling arachnoid matter. They are regarded as a development abnormality of the arachnoid, originating from a splitting or duplication of this membrane. However, precise etiology and natural history remain controversial. Different hypotheses have been developed including agenesis of brain structures, arachnoiditis, active fluid secretion, and pulsatile pump. We present a review of the literature concerning these items and report one case of a suprasellar arachnoid cyst in which a slit-valve mechanism was observed by means of cine-mode MRI preoperatively and confirmed during the endoscopic intervention.
蛛网膜囊肿是充满脑脊液样内容物的占位性病变，周围有一层类似蛛网膜的膜。它们被认为是蛛网膜的发育异常，起源于该膜的分裂或重复。然而，确切的病因和自然病史仍存在争议。已经提出了不同的假说，包括脑结构发育不全、蛛网膜炎、活跃的液体分泌和搏动泵。我们对有关这些内容的文献进行了综述，并报告了一例鞍上蛛网膜囊肿病例，术前通过电影模式磁共振成像观察到裂隙瓣机制，并在内镜干预期间得到证实。
