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  • Title: Osteoid osteoma of the ethmoid bone associated with dacryocystitis.
    Author: Lachanas VA, Koutsopoulos AV, Hajiioannou JK, Bizaki AJ, Helidonis ES, Bizakis JG.
    Journal: Head Face Med; 2006 Aug 04; 2():23. PubMed ID: 16887047.
    Abstract:
    BACKGROUND: Osteoid osteomas (OO) are small, benign osteoblastic lesions. Ethmoid bone OO has been very rarely reported so far. CASE PRESENTATION: We report a case of a 16-year-old boy suffering from persistent epiphora and a mild pain in the area of median canthus, due to a bone density mass within the right ethmoid air cells extending to the ipsilateral right orbit. The mass was removed via an external ethmoidectomy approach. Histopathologic examination of the specimen set the diagnosis of OO. One year after the operation the patient is free of symptoms, while no recurrence occurred. CONCLUSION: A case of ethmoid bone OO associated with dacryocystitis is reported. Although benign and rare, OO should be considered in differential diagnosis of the ethmoid bone osteoblastic lesions.
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