We report a case of extensive dorso-lumbar en-plaque meningioma that was mimicking ligamentum flavum hypertrophy and review the literature. A 65-year-old male presented with history of low back pain of 2-year duration with worsening of the pain since past 2 months. On examination, he had flaccid paraplegia with bowel and bladder involvement. Magnetic resonance imaging findings were suggestive of extensive ligamentum flavum hypertrophy. The patient underwent D9-L2 laminectomy. The dura was thickened and extensively vascular and the lesion could be partially excised. Histopathology was suggestive of meningioma. Spinal en-plaque meningiomas are rare and challenging lesions associated with poorer outcome.