<prompt> A 4 years old child was brought to the hospital with complains of abdominal mass and fever. On CT, crescent shaped, discrete peripheral calcification was seen. Which of the following chemotherapy regimen is given in this condition?FOLFOXECFCAFVCD  <response>: Hints in the question suggesting diagnosis of Wilms tumor - Age - Abdominal mass - Crescent shaped, discrete and peripheral calcification Chemotherapy regimen used in Wilms tumor- Vincristine, Cyclophosphamide, DoxorubicinDactinomycin CA esophagus CA stomach ECF Epirubicin Cisplatin 5-FU Colorectal carcinoma FOLFOX-IV Folinic add Leucovorin 5-FU CA Breast CAF Cyclophosphamide Adriamycin 5-FU Staging Pre-chemotherapy staging Post-chemotherapy staging - Preferred by National Wilms Tumor Staging System NWTS system - Staging surgery is done beforechemotherapy - Preferred by International society ofPediatric Oncology SIOP staging system- Staging Surgery is done afterchemotherapy 