Jeong Jae Ho, Ahn Seong Ki, Jeon Sea Yuong, Park Jung Je, Kim Jin Pyeong, Park In Sung
Department of Otolaryngology and Neurosurgery, College of Medicine, GyeongSang National University, Jinju, 660-702, South Korea.
Auris Nasus Larynx. 2006 Sep;33(3):321-4. doi: 10.1016/j.anl.2005.11.021. Epub 2006 Jan 20.
Pseudomeningoceles are formed by extravasation of cerebrospinal fluid through a dural defect into soft tissue. They mostly form as a result of surgical trauma to the dural covering of the lumbar or cervical spine surgery, especially during laminectomy. Howerver, post-traumatic pseudomeningocele rarely occurs in the head and neck. A 32-year-old female presented with a 10-year history of right ear fullness following head trauma. A soft, non-pulsatile and cystic mass was noted in the right external auditory canal. The MRI scan demonstrated the connection between subarachnoid space and cyst of the right external auditory canal. The right ear was explored and mastoid antrum was partially filled with a cyst connected to the dural defect. The extradural portion of the mass was removed, the dural defect was repaired with a temporalis fascia-cartilage graft. Clinical manifestations, diagnosis and surgical approaches for post-traumatic pseudomeningocele arising in the head and neck region are briefly discussed.
假性脑脊膜膨出是由于脑脊液通过硬脑膜缺损渗入软组织而形成的。它们大多是腰椎或颈椎手术中硬脑膜覆盖层受到手术创伤的结果，尤其是在椎板切除术中。然而，创伤后假性脑脊膜膨出很少发生在头颈部。一名32岁女性在头部外伤后有10年右耳闷胀史。右侧外耳道可见一个柔软、无搏动的囊性肿物。磁共振成像扫描显示蛛网膜下腔与右侧外耳道囊肿之间存在连通。对右耳进行探查，发现乳突窦部分被一个与硬脑膜缺损相连的囊肿填满。切除肿物的硬膜外部分，用颞肌筋膜-软骨移植物修复硬脑膜缺损。本文简要讨论了头颈部创伤后假性脑脊膜膨出的临床表现、诊断及手术方法。
