The bladder was innervated by sacral nerve roots S2, S3, S4. It is supplied by these sacral nerve roots from both sides. These sacral nerve roots exit the spinal canal through the foramina and the sacrum. These nerve roots can be compressed due to mass effect of the tumor of the sacrum, hematoma in the lumbosacral region or a central lumbar disk, which may impinge on the sacral nerve roots.