The more common source of<unk><unk>  is a direct or secondary tumor involvement of the plexus with MRI being the typical confirmation tool. Tumors typically present with enhancement of nerve roots and T2-weighted hyperintensity. The differential consideration of RILP requires taking a medical history and neurologic examination. RILP's neurological symptoms can mimic other nerve disorders. People may present with pure lower motor neuron syndrome, a symptom of amyotrophic lateral sclerosis (ALS). RILP may also be misdiagnosed as leptomeningeal metastasis often showing nodular MRI enhancement of the cauda equina nerve roots or having increased CSF protein content. Other differential diagnoses to consider are Chronic Inflammatory Demyelinating Polyradiculoneuropathy, neoplastic lumbosacral<unk> , paraneoplastic neuronopathy, diabetic lumbosacral<unk> , degenerative disk disease (osteoporosis of the spine), Osteoarthritis of the spine,<unk>  Spinal Stenosis, post-infectious<unk> , carcinomatous meningitis (CM), mononeuritis multiplex, and chemotherapy-induced<unk> . The testing to resolve a RILP diagnosis involves blood serum analysis, X-rays, EMG, MRI and Cerebrospinal Fluid analysis.
Radiation-induced lumbar plexopathy
Complex regional pain syndrome
Spinal disc herniation
Calpainopathy
Lumbar disc disease
Nerve compression syndrome
Degenerative disc disease
Vascular myelopathy