title: Symptomatic Surgically Treated Non-neoplastic Cysts of the Central Nervous System: A Clinicopathological Study From Pakistan.
abstract: OBJECTIVE
  To report clinicopathologic features of symptomatic surgically removed non-neoplastic cysts of the central nervous system (CNS).
  
  
  METHODS
  Case series.
  
  
  METHODS
  The Aga Khan University Hospital, Karachi, from 2003 to 2012.
  
  
  METHODS
  All non-neoplastic CNS cysts reported during the study period were retrieved and reviewed. Age, gender, location, histologic type and clinical features were noted.
  
  
  RESULTS
  A total of 124 cysts were diagnosed in the study period. These included 44 epidermoid cysts (mean age 30.5 ± 13.8 years), 35 colloid cysts (mean age 31 ±13.2 years), 32 arachnoid cysts (mean age 24.8 ±20.2 years), 6 dermoid cysts, 3 enterogenous cysts and Rathke's cleft cysts each and 1 ependymal cyst. All cyst types mainly presented in young adults in both genders with signs and symptoms of a mass lesion.
  
  
  CONCLUSIONS
  Non-neoplastic cyst mainly presented like a CNS mass lesion in young adults. Epidermoids were the most common type of these cysts in the present series followed by the colloid and the arachnoid cysts.
authors: Department of Pathology and Microbiology, The Aga Khan University Hospital, Karachi.
authors: Nasir Ud
authors: NU
authors: Din
authors: Department of Pathology and Microbiology, The Aga Khan University Hospital, Karachi.
authors: Huma
authors: H
authors: Arshad
authors: Department of Pathology and Microbiology, The Aga Khan University Hospital, Karachi.
authors: Zubair
authors: Z
authors: Ahmad
authors: Department of Pathology and Microbiology, The Aga Khan University Hospital, Karachi.
authors: Sheema
authors: S
authors: Hasan
authors: Department of Neorosurgery, The Aga Khan University Hospital, Karachi.
authors: Mohammad Ehsan
authors: ME
authors: Bari
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D016080:Arachnoid Cysts / Q000453:epidemiology / Q000601:surgery; D020863:Central Nervous System Cysts / Q000145:classification / Q000453:epidemiology / Q000601:surgery*; D056364:Colloid Cysts / Q000453:epidemiology / Q000601:surgery; D004814:Epidermal Cyst / Q000453:epidemiology / Q000601:surgery*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010154:Pakistan / Q000453:epidemiology; D012189:Retrospective Studies; D017678:Sex Distribution; D016896:Treatment Outcome; D055815:Young Adult