Idiopathic Fibroinflammatory Disease of the Face, Eyelids, and Periorbital Membrane With Immunoglobulin G4–Positive Plasma Cells

Progressive sclerosing orbital pseudotumors are a subset of usually primary and localized idiopathic fibroinflammatory disorders. We report on a 66-year-old man who developed this condition along the facial tissue planes with extension into the orbit and preferential involvement of the periorbital membrane. Fibrocollagenous tissue with scattered lymphoid aggregates without follicle formation dominated the process. There was a light dispersion of...