Histologically distinctive papular neutrophilic xanthomas in HIV-1 + patients.

Xanthomas may be associated with benign or malignant lymphoproliferative diseases, often with associated hypergammaglobulinema. In human immunodeficiency virus type 1 (HIV-1) disease, there is a high lymphoproliferative rate despite the immunodeficiency and increased cell death. We report three HIV-1-positive patients with facial papular xanthomatosis eruptions associated with hypergammaglobulinema, and an immunoglobulin A (IgA) gammopathy. Histopathologic features include lipid-laden macrophages, extracellular nuclear dust with phagocytosized nuclear debris, and hyalinization with areas of hyaline necrosis of collagen fibers. These distinctive papular xanthomas may be a marker of HIV-1 disease and of a pattern of immunodysregulation, immunodeficiency, and lymphoid proliferation seen in HIV-1 disease.