Abdominal masses in infants.
D000008:Abdominal Neoplasms / Q000601:surgery*; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000601:surgery; D009447:Neuroblastoma / Q000601:surgery; D007690:Polycystic Kidney Diseases / Q000601:surgery; D009396:Wilms Tumor / Q000601:surgery