Primary extramedullary plasmacytoma of the orbit

We report a case of extramedullary plasmacytoma of the orbit. This is a rare tumour which has uncommonly presented in the orbit.

A 58-year-old woman presented with painless proptosis, upper lid swelling and ptosis. Incisional biopsy was performed. Clinical findings and investigations were correlated to establish the diagnosis. Treatment consisted of 35 Gy external beam radiotherapy.

This condition is considered to be of low grade malignancy and as such can be regarded as a separate entity to multiple myeloma involving the orbit or solitary myeloma of bone in terms of treatment and prognosis.