IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-5-35163 Original Research Paper RETROSTERNAL GOITRE WITH VARIED HISTOMORPHOLOGY: A CLINICOPATHOLOGICAL CASE REPORT Avinash Kumar Dr. Dr. Garima Sinha Dr. Dr. Dilip Kumar Singh Dr. May 2021 10 5 01 02