title: [Rhabdoid tumor of the kidney arising in a newborn infant: description of a case with ultrastructural observations].
abstract: BACKGROUND
  Rhabdoid tumour of the kidney is a new independent entity. Before it was considered a variant of Wilms tumor of the kidney. Now we have enough parametres to define the rhabdoid tumor: immunohistochemistry positive by the vimentin, special histological features and behaviour.
  
  
  METHODS
  We report a very aggressive case of rhabdoid tumor found in a two week old infant.
  
  
  RESULTS
  We studied aspects of histology and histochemistry. We found a positivity for vimentin and many cells in apoptosis.
  
  
  CONCLUSIONS
  The mild positivity for vimentin and the high number of cells in apoptosis suggest a relationship between apoptosis and behaviour.
authors.affiliation: Dipartimento di Citomorfologia, Università di Cagliari.
authors.forename: M
authors.initials: M
authors.lastname: Terlizzo
authors.forename: R
authors.initials: R
authors.lastname: Ambu
authors.forename: G
authors.initials: G
authors.lastname: Crisponi
authors.forename: A
authors.initials: A
authors.lastname: Marras
authors.forename: G
authors.initials: G
authors.lastname: Faa
mesh_terms: D017209:Apoptosis; D014408:Biomarkers, Tumor / Q000032:analysis; D001932:Brain Neoplasms / Q000151:congenital / Q000556:secondary; D018450:Disease Progression; D017809:Fatal Outcome; D005260:Female; D006338:Heart Neoplasms / Q000151:congenital / Q000556:secondary; D006801:Humans; D007231:Infant, Newborn; D007680:Kidney Neoplasms / Q000737:chemistry / Q000151:congenital* / Q000648:ultrastructure; D008113:Liver Neoplasms / Q000151:congenital / Q000556:secondary; D008175:Lung Neoplasms / Q000151:congenital / Q000556:secondary; D008207:Lymphatic Metastasis; D009363:Neoplasm Proteins / Q000032:analysis; D018335:Rhabdoid Tumor / Q000737:chemistry / Q000151:congenital* / Q000556:secondary / Q000648:ultrastructure; D014746:Vimentin / Q000032:analysis
chemical_list: D014408:Biomarkers, Tumor; D009363:Neoplasm Proteins; D014746:Vimentin