Ebina K, Mita R, Suzuki S
No Shinkei Geka. 1976 Jan;4(1):89-94.
Primary arachnoid cyst in adults seems to be relatively rare. Our case was a 42-year-old female, who complained of diplopia, dizziness, mild headache, and showed papilledema. Right carotid angiograms revealed the characteristic findings. Right fronto-parietal craniotomy was then performed. In the operation, a large, thin walled cyst was found on the surface of the right cerebral hemisphere. When the membrane was removed, essentially normal, but slightly atrophi gyri, could be seen. Aspiration of encapsulated fluid, and extirpation of the cyst wall resulted in an excellent improvement. Microscopically, the wall of the cyst was lined with normal arachnoid cells. The case was presumed to be a primary arachnoid cyst for the reasons that no definited etiological factor could be found in this case an no abnormal findings other than the cyst itself could be found in the operation and in the histological specimen. We discuss reported cases in our review, and about pathological findings, symptoms, diagnosis, and treatment of this disease.
成人原发性蛛网膜囊肿似乎相对少见。我们的病例是一位42岁女性，她主诉复视、头晕、轻度头痛，并伴有视乳头水肿。右侧颈动脉血管造影显示出特征性表现。随后进行了右额顶开颅手术。术中，在右侧大脑半球表面发现一个大的薄壁囊肿。当包膜被移除时，可以看到基本正常但略有萎缩的脑回。抽出包囊内的液体并切除囊肿壁后病情得到了显著改善。显微镜下，囊肿壁内衬正常的蛛网膜细胞。由于该病例未发现明确的病因，且在手术及组织学标本中除囊肿本身外未发现其他异常，因此推测该病例为原发性蛛网膜囊肿。我们在综述中讨论了已报道的病例，以及这种疾病的病理表现、症状、诊断和治疗。
