title: Subconjunctival Herniated Orbital Fat Mimicking Adipocytic Neoplasm.
abstract: OBJECTIVE
  To describe and discuss rare and benign conditions of subconjunctival orbital fat herniation that may mimic adipocytic neoplasm.
  
  
  METHODS
  Sixteen eyes of 13 patients with subconjunctival orbital fat herniation were included. They all underwent transconjunctival excision owing to cosmesis, discomfort, or suspicion of malignancy. Histopathologic examination, postoperative complications, and recurrent conditions were analyzed.
  
  
  RESULTS
  Eleven male and two female patients were included. The lesion was unilateral in 10 and bilateral in 3 cases. Excision was performed via conjunctival wound and removing the prolapsed orbital fat. The conjunctiva was then closed with two to three interrupted sutures. All the histopathologic specimens revealed Lochkern cells, floret cells, and mature adipocytes separated by fibrovascular septae without hyperchromatic cells, consistent with subconjunctival herniated orbital fat. All the patients were treated successfully with transconjunctival excision without recurrence at an average follow-up of 10.6 months (range, 6 to 16 months).
  
  
  CONCLUSIONS
  Prolapse of subconjunctival orbital fat is an uncommon entity of intraorbital masses and may mimic adipocytic neoplasm. It is usually associated with a dehiscence in the Tenon capsule. Surgical excision is indicated and pathologic evaluation is necessary if any malignancy is suspected.
authors.affiliation: *MD †PhD Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan (CCL, SWL, CCC, LCW); Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan (SLL); and Department of Pathology, Taipei City Hospital, Renai Branch, Taipei, Taiwan (YYW).
authors.forename: Chih Chung
authors.initials: CC
authors.lastname: Lin
authors.forename: Shu Lang
authors.initials: SL
authors.lastname: Liao
authors.forename: Shiow Wen
authors.initials: SW
authors.lastname: Liou
authors.forename: Chun Chen
authors.initials: CC
authors.lastname: Chen
authors.forename: Yih Yiing
authors.initials: YY
authors.lastname: Wu
authors.forename: Lin Chung
authors.initials: LC
authors.lastname: Woung
mesh_terms: D000273:Adipose Tissue / Q000473:pathology*; D000368:Aged; D000369:Aged, 80 and over; D003229:Conjunctival Diseases / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006547:Hernia / Q000175:diagnosis*; D059685:Herniorrhaphy; D006801:Humans; D008297:Male; D008875:Middle Aged; D018205:Neoplasms, Adipose Tissue / Q000175:diagnosis*; D009916:Orbital Diseases / Q000175:diagnosis* / Q000601:surgery; D011391:Prolapse; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed