Orbital amyloidoma (isolated amyloidosis): a case report.

This is the first case report of primary orbital amyloidoma in a 56-year-old Thai man who presented with proptosis for 4 days. He also complained of orbital discomfort associated with palpitation during the past 4 months. He was treated with corticosteroid for 6 months and slight left orbital pain ensued after cortisone discontinuation. Surgical removal of the orbital mass was done and proved to be "Amyloidoma" by multiple method technologies AL type. His visual acuity and proptosis were improved. Investigation for systemic amyloidosis was done by rectal biopsy and protein electrophoresis but there was no evidence of systemic amyloidosis. The authors reported the first case of orbital amyloidoma in Thailand.