My wife is experiencing leg numbness and constipation. the following also describe her: numbness or tingling and loss of strength. the hospital is releasing her with her left leg numb they did mri and ct scan.what do we need to check? possibilities?

See a neurologist: Cannot begin to opine on possibilities without complete history (How long symptoms have been going on, sudden or slow onset, aggravating/relieving actions, etc.). Also need physical exam and lab work. Imaging is nice to exclude many things, but not sufficient for diagnosis. May consider nerve conduction study (EMG). Suggest a neurologist, the sooner the better.

Check Medication lis: Multiple symptoms arising simultaneously argues against an anatomic problem that would've been detected by MRI or CT scan. Chances are that this is a medication side effect (from anesthesia?) or a neurologic condition. You can ask for electromyography / nerve conduction study (EMG / NCS) that may help determine cause of numbness / weakness. For constipation, laxatives should be tried. Use HT Prime

See neurologist: It appears that she is having a neurologic problem which may not be detected by imaging studies.