Postradiation myelopathy

Radiation-induced lumbar plexopathy (RILP) or radiation-induced lumbosacral plexopathy (RILSP) is nerve damage in the pelvis and lower spine area caused by therapeutic radiation treatments. RILP is a rare side effect of external beam radiation therapy and both interstitial and intracavity brachytherapy radiation implants.In general terms, such nerve damage may present in stages, earlier as demyelination and later as complications of chronic radiation fibrosis. [Source: Wikipedia ]