Retroperitoneal tumors in children; roentgen diagnosis.
D000005:Abdomen; D000008:Abdominal Neoplasms; D002114:Calcinosis; D002648:Child; D006801:Humans; D007223:Infant; D007224:Infant Care; D007674:Kidney Diseases; D007680:Kidney Neoplasms; D016740:Meridians; D009369:Neoplasms; D009447:Neuroblastoma; D012186:Retroperitoneal Neoplasms; D009396:Wilms Tumor
ABDOMEN/neoplasms; KIDNEYS/diseases; NEPHROBLASTOMA/in infant and child