NGFR and extraosseous osteosarcoma: In a study done by Fanburg-Smith and Miettinen, non-neural mesenchymal tumors showed variable NGFR expression based on tumor type, with rhabdomyosarcoma demonstrating a 90% positivity of 94 cases, Ewing Sarcoma 32% in 31 cases and extraskeletal osteosarcomas 23% in 13 cases [60].