title: [Histopathology studies on 8,673 cases of ocular adnexal hyperplastic lesions and tumors].
abstract: OBJECTIVE
  To study the histopathologic classification of ocular adnexal hyperplastic lesions and tumors according to the histogenesis and the anatomic sites.
  
  
  METHODS
  To analyze retrospectively the pathologic specimens of 8,673 cases of ocular adnexal hyperplastic lesions and tumors between 1961 - 1997.
  
  
  RESULTS
  There were 7,265 benign cases (83.77%), and 1,408 malignant cases (16.23%). Classification by anatomic sites: eye lid 5,313 cases (61.26%), orbit 1,484 cases (17.11%) and epibulbar 1,876 cases (21.63%). Classification by histogenesis: (1) Primary tumor 6,679 cases: epitheliogenic 2,481 cases (37.15%), mesenchymal 753 cases (11.27%), lympho-hematopoietic 102 cases (1.53%), neurogenic 1,542 cases (23.09%), congenital abnormal embryogenetic 1,767 cases (26.46%), uncertain resource tumor 34 cases (0.50%). (2) Secondary tumor 13 cases; (3) Metastatic tumor 9 cases; (4) Non-tumor lesion 1,972 cases.
  
  
  CONCLUSIONS
  The classification is helpful to the histopathologic diagnosis and the study about the detailed distribution of common ocular adnexal hyperplastic lesions and rare tumors, and it also increases the pathologic diagnostic data in North China.
authors.affiliation: Beijing Institute of Ophthalmology, Beijing 100005.
authors.forename: J
authors.initials: J
authors.lastname: Dai
authors.forename: X
authors.initials: X
authors.lastname: Sun
authors.forename: B
authors.initials: B
authors.lastname: Li
authors.forename: B
authors.initials: B
authors.lastname: Zheng
authors.forename: S
authors.initials: S
authors.lastname: Hu
authors.forename: L
authors.initials: L
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: C
authors.initials: C
authors.lastname: Chen
mesh_terms: D005142:Eyelid Neoplasms / Q000473:pathology*; D006801:Humans; D006965:Hyperplasia; D009918:Orbital Neoplasms / Q000473:pathology*; D012189:Retrospective Studies