Orbital Inflammation With IgG4-Positive Plasma Cells

To describe clinical, radiographic, and morphologic findings in patients with IgG4-positive cells present on orbital biopsy specimens.Retrospective review (from January 1, 1993, through December 31, 2006) of patients with orbital biopsy specimens that excluded lymphoma; comparison of patients with and without IgG4-positive cells on immunostaining.Of 21 patients, 11 had increased IgG4-positive cells (defined as >10 cells on biopsy). Symptoms...