Part of the diagnosis is what is the prevailing symptom? Do you have predominant right buttocks and leg pain or more lower back pain?
To determine what the compressive mass consists of at L5-S1 (herniation vs scar), an MRI with gadolinium would be necessary.
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.