title: [Laparoscopic nephroureterectomy in Wilms tumor].
abstract: BACKGROUND
  Minimally invasive surgery (CMI) for the treatment of malignant tumors in children begins to have a role for selected cases and reaches similar results than open surgery. We show our first two cases of Wilms tumor treated by laparoscopy describing patients and technique.
  
  
  METHODS
  Three-year-old girl with macroscopic hematuria is diagnosed of 8 cm mass in the left kidney suggesting Wilms tumor. After 4 weeks of chemotherapy she went under laparoscopic nephroureterectomy. The histological result was Wilms tumor. Chemotherapy was completed seven more months. Five-year-old patient with abdominal pain is diagnosed of renal right mass suggesting Wilms tumor. After 4 weeks of chemotherapy the laparoscopic nephroureterectomy was performed. The histological result was Wilms tumor. Treatment was completes with postoperatory chemotherapy.
  
  
  RESULTS
  After 1 year follow-up both patients have clinical and radiological absence of disease.
  
  
  CONCLUSIONS
  The CMI in selected cases of Wilms tumor fulfills successfully the aims of the surgical treatment.
authors.affiliation: Servicio de Cirugía Pediátrica, Hospital Clínico Universitario de Valladolid. memoli92@hotmail.com
authors.forename: M E
authors.initials: ME
authors.lastname: Molina Vázquez
authors.forename: A
authors.initials: A
authors.lastname: Sánchez Abuín
authors.forename: R
authors.initials: R
authors.lastname: Aguilar Cuesta
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000601:surgery*; D010535:Laparoscopy; D009392:Nephrectomy / Q000379:methods*; D014513:Ureter / Q000601:surgery*; D009396:Wilms Tumor / Q000601:surgery*