Chikkanna Jayanth Kumar Bangalore, Gopal Surendra, Sampath Deepak
Senior Consultant and Unit Chief, Department of Orthopaedics, St Martha's Hospital , Bengaluru, Karnataka, India .
Resident, Deparment of Orthopaedics, St Martha's Hospital , Bengaluru, Karnataka, India .
J Clin Diagn Res. 2016 Jan;10(1):RD04-5. doi: 10.7860/JCDR/2016/17865.7108. Epub 2016 Jan 1.
Schwannomas are common, benign, slow growing tumours of peripheral nerve sheath arising from the schwann cells of the neuroectoderm. They do not transverse the nerve but remain within the sheath on top of the nerve. They rarely present in the sciatic nerve. Sciatic schwannomas may mimic symptoms of herniated disc, usually with radiation of pain to buttocks and thigh region with inability to walk for long distances and sometimes may present with claudication. In the absence of low back pain and with a normal Lumbo-Sacral MRI study, causes intrinsic to sciatic nerve needs to be thought off, which often delays the diagnosis. Rarity in our case-patient presented with tingling sensation and inability to squat on hard surface for more than 10 minutes with a normal x-ray and MRI study of lumbosacral spine.
施万细胞瘤是常见的良性、生长缓慢的外周神经鞘肿瘤，起源于神经外胚层的施万细胞。它们不穿过神经，而是位于神经鞘内神经的上方。它们很少出现在坐骨神经中。坐骨神经施万细胞瘤可能会模仿椎间盘突出的症状，通常疼痛会放射至臀部和大腿区域，导致无法长时间行走，有时还可能出现间歇性跛行。在没有腰痛且腰骶部MRI检查正常的情况下，需要考虑坐骨神经本身的病因，这往往会延迟诊断。在我们的病例中，患者表现为刺痛感，在硬地面上无法蹲下超过10分钟，而腰骶部脊柱的X线和MRI检查均正常，这种情况较为罕见。
