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Solitary osseous plasmacytoma of the orbit with amyloidosis
Nigel G Rawlings1, Seymour Brownstein, Jennifer W Robinson
1Department of Ophthalmology, University of Ottawa Eye Institute, The Ottawa Hospital, Ottawa, Ontario, Canada.
Abstract:
A 40-year-old woman with an orbital lesion presented with a history of slowly progressive proptosis. A thorough systemic workup did not reveal any stigmata of multiple myeloma, and she was treated with a course of orbital radiotherapy. Histopathologic studies of the biopsy specimen revealed a proliferation of neoplastic plasma cells, which produced monoclonal lambda light chains surrounding concretions of congophilic, amorphous material. The lesion was diagnosed as a solitary osseous plasmacytoma of the orbit containing amyloid.
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