Microsurgery for intradural epidermoid cyst at cauda equina level in a 9-year-old child: A case report

Epidermoid cysts are rare benign tumors. Here, we present a case of spontaneous intradural epidermoid cyst at cauda equina level in a 9-year-old patient, which we believed the first case to be reported in Vietnam. A 9-year-old boy presented with 4 months of spontaneous left lower extremity muscle weakness and paresthesia. The MRI images suggested the diagnosis of intradural epidermoid cyst at cauda equina level. The patient underwent L5–S1 laminectomy and durotomy for tumor resection. The histology confirmed the diagnosis of epidermoid cyst. Post-operative images demonstrated total cyst removal. The epidermiology, presentation and diagnosis and strategy of treatments as well as their outcomes were discussed. Diagnosis of spinal epidermoid cyst is often delayed for its obscure presentation. Microsurgical dissection along with intra-operative mobile C-Arms enable total tumor resection while preserving spinal stability and neurological function. Follow-up with post-operative magnetic resonance imaging and tumor marker are helpful. •Diagnosis of spinal epidermoid cyst is often delayed for its obscure presentation.•Microsurgical dissection and mobile C-Arm enables total tumor resection while preserving stability and neurological function•Magnetic resonance imaging and tumor marker are helpful in follow-up.