title: Imaging findings and management of diaphragmatic mesothelial cysts in children.
abstract: BACKGROUND
  Diaphragmatic mesothelial cysts are rare benign congenital lesions with typical imaging findings.
  
  
  OBJECTIVE
  To present imaging and treatment outcomes in 30 children with diaphragmatic mesothelial cyst.
  
  
  METHODS
  We conducted a retrospective chart review and recorded demographic data, imaging findings, treatment and US follow-up results, initial and final volume of the cysts and length of follow-up period for each case of diaphragmatic mesothelial cyst in a specialist hospital.
  
  
  RESULTS
  The study included 30 children (16 girls, age range 1-17 years, mean age 7.9 years) diagnosed with diaphragmatic mesothelial cyst between January 2010 and December 2015. Imaging findings included thin-walled bilobulated or oval-shape cysts located between the diaphragm and right lobe of the liver. Treatment consisted of percutaneous drainage in 17 children and was successful in all. Cysts disappeared completely in 12 of these 17 children (70.5%, 95% confidence interval [CI] 44-90%). Mean volume reduction was 98%. No complication or mortality was seen. The other 13 children were followed with US without treatment. In 4 of these 13 children (30.8%, 95% CI 9-61%), cysts spontaneously decreased in size. No cyst increased in size.
  
  
  CONCLUSIONS
  In children with typical imaging findings, percutaneous drainage appears safe and effective when treatment is deemed necessary.
authors.affiliation: Department of Radiology, Medical Faculty, Gevher Nesibe Hospital, Erciyes University, 38039, Kayseri, Turkey. guvenkahriman@hotmail.com.
authors.forename: Guven
authors.initials: G
authors.lastname: Kahriman
authors.affiliation: Department of Radiology, Medical Faculty, Gevher Nesibe Hospital, Erciyes University, 38039, Kayseri, Turkey.
authors.forename: Nevzat
authors.initials: N
authors.lastname: Ozcan
authors.affiliation: Department of Radiology, Medical Faculty, Gevher Nesibe Hospital, Erciyes University, 38039, Kayseri, Turkey.
authors.forename: Serap
authors.initials: S
authors.lastname: Dogan
authors.affiliation: Department of Anesthesiology, Gevher Nesibe Hospital, Erciyes University, Kayseri, Turkey.
authors.forename: Adnan
authors.initials: A
authors.lastname: Bayram
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003560:Cysts / Q000151:congenital* / Q000000981:diagnostic imaging* / Q000628:therapy*; D003964:Diaphragm / Q000000981:diagnostic imaging*; D004322:Drainage; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012189:Retrospective Studies; D015911:Sclerotherapy; D014463:Ultrasonography / Q000379:methods*
keywords: Children; Diaphragmatic mesothelial cyst; Percutaneous treatment; Sclerotherapy; Ultrasound