We report a 59-year-old man presenting with retroperitoneal fibrosis (RF) associated with IgG lambda multiple myeloma. Recent clinical and immunohistochemical findings suggest that RF might be a particular expression of plasma cell/lymphoid dyscrasia, and that this association is not merely fortuitous. We review the pathophysiological evidence supporting this hypothesis.
Sinapi, I., Caers, J., Connerotte, T., Koutaissoff, S., & Lambert, M.-T. (2010). Fibrose retropéritoneale et myelome multiple : association fortuite ? La Revue de médecine interne, 31(5), e4-6. https://doi.org/10.1016/j.revmed.2009.04.011 (Original work published 2010)