title: Benign orbital tumors with bone destruction in children.
abstract: OBJECTIVE
  To present rare benign orbital tumors with bone destruction in children who could not be diagnosed pre-surgically and may simulate malignant ones.
  
  
  METHODS
  A retrospective review of cases. Clinical, operative and pathological records in all children with a diagnosis of benign orbital tumors who showed remarkable bone destruction at a tertiary Ophthalmic Center in China between Jan 1, 2000 and Dec 31, 2009 were reviewed. All patients had definitive histopathologic diagnosis.
  
  
  RESULTS
  Eight patients with benign orbital tumors showed obvious bone destruction, including six cases of eosinophilic granuloma, one case of leiomyoma and one case of primary orbital intraosseous hemangioma. Among them, three patients were females and five patients were males. Tumors were unilateral in all cases, with both the right and left side affected equally. Age ranged from 3 to 7 years (mean 4.1 years). Symptom duration ranged from 1 to 5 weeks (mean 4.8 weeks). Eyelid swelling and palpable mass were the most common complaint. There was no evidence for multifocal involvement in cases with eosinophilic granuloma. Among six patients with eosinophilic granuloma, two were treated with low dose radiation (10 Gy), three received systemic corticosteroid and one was periodically observed only after incisional biopsy or subtotal curettage. There was no postoperative therapeutic intervention in the two patients with leiomyoma and intraosseous hemangioma. All eight patients regained normal vision without local recurrence after a mean follow-up time of 32.8 months.
  
  
  CONCLUSIONS
  Benign orbital tumors such as isolated eosinophilic granuloma, leiomyoma and primary orbital intraosseous hemangioma may show remarkable bone destruction.
authors.affiliation: The State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, The People's Republic of China. Yan2011@tom.com
authors.forename: Jianhua
authors.initials: J
authors.lastname: Yan
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhou
authors.forename: Yongping
authors.initials: Y
authors.lastname: Li
mesh_terms: D001847:Bone Diseases / Q000175:diagnosis* / Q000473:pathology; D001842:Bone and Bones / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D005500:Follow-Up Studies; D006391:Hemangioma / Q000378:metabolism; D006801:Humans; D008297:Male; D008495:Medical Oncology / Q000379:methods; D009885:Ophthalmology / Q000379:methods; D009915:Orbit / Q000473:pathology; D009918:Orbital Neoplasms / Q000175:diagnosis*; D012008:Recurrence; D012189:Retrospective Studies