IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-11-31912 Original Research Paper AN INTERESTING CASE OF LONG STANDING IMPACTED BUTTON BATTERY CAUSING SEPTAL PERFORATION AND DEFORMITY Sanjeev Bhagat Dr. Dr. Sachiv Garg Dr. November 2020 9 11 01 02