Orbital inflammatory pseudotumor and ischemic vasculitis in Churg-Strauss syndrome: Report of two cases and review of the literature1
Section snippets
Case 1
A 43-year-old Japanese man with a 20-year history of exophthalmos and paranasal sinusitis first experienced a mild fever, cough, and pharyngeal pain on July 3, 1997. He was seen at the Department of Internal Medicine of Kurashiki Central Hospital on July 6. Moist rales were heard on auscultation. Chest roentgenogram showed miliary infiltrates in the left lower lung. Decreased arterial O2 and increased arterial CO2 were measured (PaO2, 49.2 mmHg; PaCO2, 37.3 mmHg; normal values, 69 to 116 and 32
Discussion
The first case in this study presented the chronic dacryoadenitic form of orbital inflammatory pseudotumor that was demonstrated by MRI. Orbital inflammatory pseudotumor is reportedly associated with tissue eosinophilia and eosinophil degranulation that induce inflammation of the orbital tissues and lead to fibrotic process.22 Extravascular eosinophil infiltrates in the lacrimal grand and the lateral rectus muscle in this case are compatible with the diagnosis of orbital pseudotumor. The second
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The authors have no proprietary interest in any aspect of this study.