title: [Foreign body as renal pseudotumor in a patient with renal polycystic kidney].
abstract: OBJECTIVE
  To report a case of granuloma due to a retained surgical sponge that mimicked a pseudotumor in a patient with autosomal dominant polycystic kidney disease. The appearance of retained surgical sponges on diagnostic imaging is reviewed.
  
  
  METHODS
  Patient evaluation included renal ultrasound, magnetic resonance imaging (MRI) and arteriography.
  
  
  RESULTS
  MRI provides characteristic features that permit preoperative diagnosis.
  
  
  CONCLUSIONS
  In the presence of a mass or abscess in patients who have previously undergone surgery, a retained surgical sponge should be included in the differential diagnosis. MRI permits preoperative diagnosis.
authors.affiliation: Servicio de Urología, Hospital Son Dureta, Palma de Mallorca, España.
authors.forename: M J
authors.initials: MJ
authors.lastname: Rebassa Llull
authors.forename: D
authors.initials: D
authors.lastname: Muñoz Vélez
authors.forename: F
authors.initials: F
authors.lastname: Hidalgo Pardo
authors.forename: C
authors.initials: C
authors.lastname: Gutiérrez Sanz-Gadea
authors.forename: J
authors.initials: J
authors.lastname: Palmer Sancho
authors.forename: A
authors.initials: A
authors.lastname: Mus Malleu
authors.forename: I
authors.initials: I
authors.lastname: Torrens Darder
authors.forename: M
authors.initials: M
authors.lastname: Ozonas Moragues
mesh_terms: D003937:Diagnosis, Differential; D005547:Foreign Bodies / Q000175:diagnosis*; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D007690:Polycystic Kidney Diseases / Q000150:complications*; D015503:Surgical Sponges
vernacular_title: Cuerpo extraño como pseudotumor renal en un paciente con poliquistosis renal.