question: Hello . . . my husband just had a 3D CT Myelogram this morning due to continued pain in back, numbness & tingling in billateral legs.  Written report states in conclusion, that there is a small ventral extradural defect at L2-3 with apparent nerve root cut off at the right.  His followup appt is not until Oct 29th for results, so I am trying to find out what that means, prior to appt., so that we may talk intelligently with his surgeon and know what to expect, what it means and what we can expect may be done about it.  His fusion at L4 & 5 was done Aprill 11th,2014 and had 3 consecutive surgeries within 5 weeks as he developed a hospital acqired infection, as well as 8 weeks of IV ABX.  He has not had any relief of pain since the initial surgery.Could I get an answer on what that means, what to expect and what can be done about what the Myelogram conclusion stated?