I would like to know the Neurosurgeon opinion on one MRI report took for my cousin's issue. My cousin sister is having numbness in the left side part (hands and back side) also inflammation which results severe pain since 6 months. This has increased from one month when she gone for MRI as prescribed by doctor after physical examination, they suggested for the surgery. MRI IMPRESSION: 1. THERE IS TONSILLAR HERNIATION with OBLITERATION OF ANTERIOR THECAL SAC SIGNAL THE LEVEL OF FORAMEN MAGNUM. 2. CENTRAL CANAL OF THE SPINAL CORD IS DILATED SIGNIFICANTLY FROM THE LEVEL OF C3-4 TO D9 LEVEL. THE DILATED CENTRAL CANAL IS SHOWING septation AND IS FEATURES ARE characteristic OF HYDRO syringomyelia SECONDARY TO TONSILLAR HERNIATION. 3. MINIMAL BULGE OF THE DISC AT L4-5 LEVEL Kindly advise what does it mean and does it needed any surgery to cure the problem.