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Spinal meningeal melanocytoma is an extremely rare tumour with an estimated annual incidence of 1 per 10 million people. It usually arises from the intradural extramedullary compartment at the cervical levels. Although these tumours are histologically benign, they may behave aggressively. Local recurrence could occur even after total tumour excision. We report a case of a 33-year-old Asian male who developed progressive weakness and numbness of the bilateral lower extremities as well as urinary retention five years after complete tumour resection of lumbar spinal meningeal melanocytoma. Magnetic resonance imaging of the lumbar spine revealed a mass with thecal sac compression which was hypointense on T2-weighted images and hyperintense on T1-weighted images. The patient underwent total tumour removal. Histologic examination was compatible with recurrent meningeal melanocytoma. After a 4-week inpatient rehabilitation programme, he was able to ambulate without assistance and to do clean intermittent catheterisation for micturition on a regular basis. This is the first reported case of intradural extramedullary meningeal melanocytoma located at the lumbar region. Clinicians should consider the possibility of these rare tumours at any level of the spine, and be aware of sphincter dysfunction in addition to motor and sensory deficits of extremities.

Recurrent spinal meningeal melanocytoma at lumbar spine level: a case report