Giant-cell arteritis presenting as an orbital pseudotumor

In this report a woman with giant-cell arteritis presenting as an orbital p seudotumor is described. Other causes of orbital pseudotumor were excluded in this patient. The pathogenesis of orbital pseudotumor caused by giant-ce ll arteritis is discussed. The concurrent arteritis of the superficial temp oral artery and the rapid resolution of signs and symptoms after prednisone therapy supports the causal relationship between orbital pseudotumor and g iant-cell arteritis in this patient. (C) 1999 Elsevier Science B.V. All rig hts reserved.