title: Dysplastic kidney and not renal agenesis is the commonly associated anomaly in infants with seminal vesicle cyst.
abstract: OBJECTIVE
  To determine whether the association of seminal vesicle cyst (SVC) and renal anomaly in young children correlates with previously reported cases of SVCs in adolescent and adult patients, as congenital SVCs, although rare, are frequently described in association with ipsilateral renal agenesis, mainly in adolescent and adult patients, whereas reports on SVCs in younger children are sparse.
  
  
  METHODS
  We report on nine infants (median age 4 months) with congenital SVCs, all of them associated with ipsilateral dysplastic kidneys. All patients had ultrasonography of the renal system and voiding cysto-urethrography. Magnetic resonance imaging was used in two patients.
  
  
  RESULTS
  The SVCs were found incidentally during ultrasonography for the renal anomaly. Three patients had dysplastic and six had multicystic dysplastic kidneys. In previous reported adult cases of SVCs the most common associated renal anomaly was agenesis of the ipsilateral kidney (25 of 44 cases), whereas only one case of dysplastic kidney was reported.
  
  
  CONCLUSIONS
  As the appearance of renal agenesis might result from a former congenital dysplastic kidney, our findings indicate that cases of ipsilateral renal agenesis in adult patients with congenital SVCs might represent former dysplastic or multicystic dysplastic kidney.
authors.affiliation: Department of Paediatric Surgery, Hannover Medical School, Hannover, Germany. schukfeh.nagoud@mh-hannover.de
authors.forename: Nagoud
authors.initials: N
authors.lastname: Schukfeh
authors.forename: Joachim F
authors.initials: JF
authors.lastname: Kuebler
authors.forename: Eckart
authors.initials: E
authors.lastname: Schirg
authors.forename: Claus
authors.initials: C
authors.lastname: Petersen
authors.forename: Benno M
authors.initials: BM
authors.lastname: Ure
authors.forename: Sylvia
authors.initials: S
authors.lastname: Glüer
mesh_terms: D003560:Cysts / Q000209:etiology*; D005500:Follow-Up Studies; D005832:Genital Diseases, Male / Q000209:etiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000002:abnormalities*; D008297:Male; D021782:Multicystic Dysplastic Kidney / Q000150:complications*; D012669:Seminal Vesicles