Okunaga Tomohiro, Tsutsumi Keisuke, Hayashi Tomayoshi, Nagata Izumi
Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan.
Neurosurgery. 2006 May;58(5):E994; discussion E994. doi: 10.1227/01.NEU.0000210253.25288.F3.
Endodermal cysts are commonly found in the anterior spinal cord. Reports of intracranial cases are uncommon. We report a case of endodermal cyst located on the left oculomotor nerve.
A 16-year-old female experienced diplopia followed by headache. Neurological examinations revealed left oculomotor nerve palsy. Magnetic resonance imaging scans showed a well-defined multilocular cystic mass in the proximity of the left oculomotor nerve at its exit from the midbrain.
This patient underwent biopsy and drainage of the cyst. At surgery, the cyst seemed to be intrinsic to the oculomotor nerve and could not be totally resected. Pathological examination confirmed the diagnosis of endodermal cyst.
Intracranial endodermal cysts are rare, particularly when associated with the cranial nerves. To our knowledge, this is the second case of endodermal cyst located on the oculomotor nerve. A detailed discussion and review of these case reports are presented.
内胚层囊肿常见于脊髓前部。颅内病例的报道并不常见。我们报告一例位于左侧动眼神经的内胚层囊肿。
一名16岁女性出现复视，随后出现头痛。神经系统检查显示左侧动眼神经麻痹。磁共振成像扫描显示在左侧动眼神经从中脑发出处附近有一个边界清晰的多房囊性肿块。
该患者接受了囊肿活检及引流。手术中，囊肿似乎起源于动眼神经，无法完全切除。病理检查确诊为内胚层囊肿。
颅内内胚层囊肿罕见，尤其是与颅神经相关时。据我们所知，这是第二例位于动眼神经的内胚层囊肿。本文对这些病例报告进行了详细讨论和回顾。
