title: Neuroblastoma causing acute urinary retention: a rare presentation.
abstract: BACKGROUND
  Neuroblastoma is the most common extracranial solid tumor in children under the age of 5 years and, after acute lymphoblastic leukemia, is the second most prevalent malignancy in childhood. Acute urinary retention is rare in children, especially due to a neuroblastoma.
  
  
  OBJECTIVE
  To present the potential complications of a pelvic neuroblastoma.
  
  
  METHODS
  A 9-month-old infant presented with urinary retention that had been attributed in the past to the infant's chronic constipation. She was catheterized and a large residual of urine was obtained; she was discharged home. She returned the following day with the same complaint. Plain radiographs suggested a soft tissue density in the pelvic region with no evidence of constipation. Rectal examination revealed a mass, and a computed tomography scan showed a large, solid mass. Pathological examination confirmed a pelvic neuroblastoma, which was resected.
  
  
  CONCLUSIONS
  The most common causes of acute urinary retention are urinary tract infections, lower urinary stones, neurologic processes, trauma, and constipation. A detailed and focused history and physical examination can be very helpful in diagnosing a pathological cause of urinary retention, such as a pelvic neuroblastoma.
authors.affiliation: Emergency Medicine Residency, The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA.
authors.forename: Amy
authors.initials: A
authors.lastname: Rasmussen
authors.forename: Antonio E
authors.initials: AE
authors.lastname: Muñiz
authors.forename: Brent
authors.initials: B
authors.lastname: King
mesh_terms: D003248:Constipation / Q000150:complications; D005260:Female; D006801:Humans; D007223:Infant; D009447:Neuroblastoma / Q000150:complications* / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D010386:Pelvic Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography; D016055:Urinary Retention / Q000150:complications / Q000209:etiology*