PMC6207883_01
Chest CT scan. The mass is compressing the right ventricle and shifting the heart. Pleural effusion is present, with compression of the left lung.
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fig1
Bilateral pleural effusion was also observed (Figure 1).
Serum protein electrophoresis before (a) and after (b) therapy. After therapy, there was a reduction of the monoclonal component (1).
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fig2
Gamma-proteins were increased (30.8% vs 10-20% normal values) on serum protein electrophoresis and contained a monoclonal component (M component) accounting for 23.3% (1.64 g/dl) (Figure 2).
Amyloid deposition in periumbilical fat ((a)-Congo red) with apple-green birefringence (b) at polarized microscope analysis.
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fig3
A sample of periumbilical fat was taken and histologically analyzed: amyloid AL deposits were found as positive Congo red and apple-green birefringent areas under polarized light (Figure 3).