title: Congenital solitary liver cysts.
abstract: OBJECTIVE
  The aim of the study was to describe clinical and pathological findings in children with rare congenital solitary liver cyst.
  
  
  METHODS
  Six children with congenital liver cyst were treated at the authors' institution from 1995 to 2002. Clinical records and operative findings of these patients were reviewed retrospectively.
  
  
  RESULTS
  Age at presentation ranged from neonatal to 14 years, and there were four girls and two boys. Hepatomegaly was the most common symptom in neonates while the older children presented with abdominal pain. Ultrasound was conclusive for diagnosis in all children, prenatal ultrasound in three. Intrahepatic cyst was found in five children. Partially extrahepatic cyst in the porta hepatis was found in one. The cyst diameters varied from 8 to 10 cm. Cysts were excised via an open abdominal approach in all patients. Histological findings confirmed the diagnosis of congenital liver cyst. Columnar epithelium was found in newborns while atrophic changes of epithelial lining were seen in older children. In a case of a 13-year-old girl the cyst was lined by metaplastic squamous epithelium with foci of slight dysplasia. Immunohistochemical studies were available in three recent children with positive findings in all of them. The postoperative course was uneventful in all patients. The follow-up period ranged from 36-120 months and no recurrence was observed.
  
  
  CONCLUSIONS
  With appropriate selection of symptomatic patients, total excision of a congenital liver cyst is a safe procedure with excellent long-term results. Given the possibility of malignant degeneration of a congenital liver cyst we recommend its surgical excision in most cases.
authors.affiliation: Department of Pediatric Surgery, Charles University in Prague, 2nd Faculty of Medicine and Teaching Hospital in Motol, Prague, Czech Republic. mrygl@yahoo.com
authors.forename: M
authors.initials: M
authors.lastname: Rygl
authors.forename: J
authors.initials: J
authors.lastname: Snajdauf
authors.forename: O
authors.initials: O
authors.lastname: Petrů
authors.forename: R
authors.initials: R
authors.lastname: Kodet
authors.forename: D
authors.initials: D
authors.lastname: Kodetová
authors.forename: V
authors.initials: V
authors.lastname: Mixa
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000293:Adolescent; D002648:Child; D003560:Cysts / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery*; D005260:Female; D006529:Hepatomegaly / Q000209:etiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008107:Liver Diseases / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery*; D008297:Male; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography