IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-7-51118 Original Research Paper Long Term Response To Gefitinib In An Egfr Mutated Lung Cancer Even After A Solitary Recurrence: A Case Report And Literature Review Sheereen Fatima Dr. Dr. Rajesh Mistry Dr. July 2023 12 7 01 02