IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-3-33864 Original Research Paper Single needle thoracic paravertebral block as an alternative to general anesthesia for modified radical mastectomy operation : A randomised control study Roy Dr. Sampriti Sadhukhan Dr. Shrawan Soni Dr. March 2021 10 3 01 02