Kövary P M, Soergel T, Happle R
Z Hautkr. 1976 Feb 1;51(3):91-6.
A gammaAchi--paraproteinemia was found in a 73 year-old female patient with pyoderma gangraenosum. Since the paraporteins hitherto observed in pyoderma gangraenosum predominantly belong to the IgA class, a relationship may exist between pyoderma gangraenosum and this type of paraproteinemia.