CDPI-Clínica de Diagnóstico Por Imagem and Department of Radiology of the Universidade Federal of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Br J Radiol. 2010 Feb;83(986):e35-8. doi: 10.1259/bjr/97329463.
Cervical synovial cysts are rare entities that are, most of the time, asymptomatic. They can cause nerve root or spinal cord compression, especially when acute haemorrhage or a marked increase in size occurs. Isolated unilateral hypoglossal nerve paralysis caused by compression of its cisternal segment is also an extremely rare condition. We report the case of a 51-year-old woman who presented with dysarthria and tongue fasciculation. MRI revealed an atlantoaxial synovial cyst that extended cranially through the hypoglossal canal and compressed the fibres of the left XII nerve on its cisternal segment. To our knowledge, this is the first case report of XII nerve paralysis being caused by an atlantoaxial synovial cyst.
颈椎滑膜囊肿是一种罕见的疾病，大多数情况下是无症状的。当出现急性出血或明显增大时，它们可能会压迫神经根或脊髓。孤立性单侧舌下神经麻痹，由其池段受压引起，也是一种极其罕见的情况。我们报告了一例 51 岁女性患者，表现为构音障碍和舌肌抽搐。MRI 显示寰枢关节滑膜囊肿向颅侧延伸，通过舌下神经管，并压迫左侧 XII 神经的池段纤维。据我们所知，这是首例由寰枢关节滑膜囊肿引起的 XII 神经麻痹的病例报告。
