Paraneoplastic Pemphigus With Autoantibody Deposition in Bronchial Epithelium After Autologous Bone Marrow Transplantation

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Abstract
Paraneoplastic pemphigus is a newly described syndrome in which patients have a severe mucocutaneous eruption with clinical features reminiscent of both erythema multiforme major (Stevens-Johnson syndrome) and pemphigus vulgaris, in association with non-Hodgkin's lymphomas and other malignant neoplasms. These patients have autoantibodies that bind to a characteristic set of epidermal proteins: desmoplakin I and desmoplakin II (molecular weight equals 250 kd and 210 kd, respectively), both major cytoskeletal structural proteins associated with desmosome cellular junctions within all epithelia, the bullous pemphigoid antigen, a 230 kd protein associated with hemidesmosomes, and a 190 000-d protein that has not been characterized. In this report, we describe a patient with paraneoplastic pemphigus who had (1) non-Hodgkin's lymphoma in apparent complete remission following autologous bone marrow transplantation, (2) very tense blisters reminiscent of bullous pemphigoid, (3) a unique pattern of immune deposits within the skin, and (4) IgG deposits within the epithelium of the pulmonary bronchi associated with respiratory compromise. (JAMA. 1992;267:1500-1502)

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