IgD Multiple Myeloma Paraproteinemia as a Cause of Myositis
Figure 1
(a) GT 100X, first biopsy: presence of a large interstitial infiltrate. (b) HE 100X, second biopsy: perivascular infiltrates, mild increase of endomysial connective. (c) IgD immunofluorescence 250X, first biopsy: presence of immunoreactivity along the sarcolemma and in the connective tissue. (d) IgD immunofluorescence 250X, second biopsy: strong reactivity in necrotic fibres and endomysial connective. (e) IgD immunofluorescence in the negative control, 250X: aspecific signal. (f) IgD immunofluorescence in a case of vasculitis, 250X: aspecific signal.
