Wierd humming sound , stops when I turn left

[vodavi6346]

While driveing there is a wierd humming noise sounds like its comming from the rear , when I turn Left or go around left curves it quites some times silenceing . Its a 94 marquis . Has anyone experinced this ? Any idea ? Just for kicks I called my boys at the junk yard they said $125 for full real end with calipers,disks,Everything I pull it useing there lift .. $200 they pull it .. OR am I jumping the gun ..

Thanks,
John

[mrltd]

Does sound like a axle bearing... But a JY rear should be gone through also...