Mri-t12-l1 l4-l5 l5-s1 disk protrusion no nerve impingement or spinal stenosis. left low back buttock leg pain 3 wks. foot cold tingling. worse when sitting standing walking. 10 days steriod no help?

Still pinched nerve: What is missing is complete history and in your case, more importantly, your exam. An emg/ncs by Rehab Dr. or Neurologist may show which nerves. MRI performed with flexion/extension films may show different results. MRI not perfect. They are a picture. You are more than a picture.

Delaying in this: Circumstance isn't advisable. Your symptoms suggest impingement, either through direct nerve compression or swelling around the nerve. In any event, a discussion with your neurologist/neurosurgeon about an epidural steroid (or transforaminal steroid) injection should happen sooner, rather than later. Although a cold, numb foot may be related to other (vascular) problems, nerve problems are primary.

Lateral stenosis: Those symptoms are suggestive of a pinched nerve, perhaps of the lateral recess or foramenal which is frequently missed. A spine surgeon would be a good idea if the symptoms are progressive and disabling. Reports can be misleading.