摘要:

Purpose:Rosai-Dorfman disease (sinus histiocytosis with massive lymphadenopathy) is a rare entity with ophthalmic manifestations in 11% of patients. Orbital and eyelid involvement as the presenting features is even more unusual.Methods:The authors report the clinical findings of a 41-year-old man with Rosai-Dorfman disease presenting as eyelid edema. Biopsy of the involved tissue was analyzed by light microscopy.Results:Histologically the orbicularis muscle contained a patchy infiltrate of lymphocytes, plasma cells, and large pale histiocytes. The histiocytes had lymphocytes within them, a condition referred to as lymphocytophagocytosis.Conclusions:Rosai-Dorfman disease is a rare clinical entity that may occasionally manifest with eyelid edema. Biopsy reveals a characteristic histopathologic picture.

ISSN:0740-9303    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Purpose:To evaluate the effectiveness of a modified porous polyethylene implant in orbital fracture repair. A porous polyethylene channel implant (PPCI) has internal channels that accept mini- or microplates from conventional plating systems, facilitating fixation to bone in the reconstruction of large, complex orbital fractures.Methods:The authors used 29 PPCIs to repair 25 orbits. Seventeen cases involved repair of an acute (less than two weeks after injury) fracture of one or more orbital walls. Eight cases represented delayed reconstruction of orbital walls for late enophthalmos or for residual defects after previous operations.Results:A PPCI provides a stable platform for orbital soft tissue. Excellent results were obtained in all patients with acute orbital fractures, whereas good or excellent corrections of enophthalmos and hypoglobus were achieved in all patients who underwent late repair. There were no instances of orbital infection, implant exposure or migration, worsening diplopia, visual loss, or loss of structural support during 31 months of follow-up.Conclusions:A PPCI allows controlled placement of a porous polyethylene sheet with secure fixation to stable bone. The implant design allows it to be cantilevered from the orbital rim to serve as a stable platform when fractures are too large to support the implant in the posterior orbit. PPCIs are ideally suited for reconstruction of defects resulting from displacement of orbital walls and for repair of posterior floor fractures, medial wall fractures, and combined floor and medial wall defects.

ISSN:0740-9303    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Purpose:The position of the globe relative to the orbital rim plays a significant role in the relationship between the eyelids and the cornea. A prominent globe (relative proptosis) may cause eyelid retraction and exposure keratopathy. Simple horizontal lower eyelid tightening exacerbates eyelid retraction. Optimal correction with an orbital decompression or advancement of the orbital rim entails considerable risk. A technically simpler alternative, placement of an orbital rim onlay implant, was evaluated.Methods:Fourteen patients with symptomatic relative proptosis underwent placement of a porous polyethylene orbital rim onlay implant.Results:Lower eyelid position, exposure keratopathy, and ocular discomfort were improved in all patients. Two patients required minor surgical revisions.Conclusions:Porous polyethylene orbital rim onlay implants are a satisfactory option to treat the sequelae of relative proptosis.

ISSN:0740-9303    

出版商:OVID    

年代:1999

数据来源: OVID