case_images: PMC3279325_01
case_images: CT chest showing bilateral pleural effusions and clear lung parenchyma.
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case_images: Computed tomography of the chest and abdomen showed multiple calcified mediastinal lymphadenopathy and pleural effusions with atelectasis of the lung bases, but no obvious parenchymal lung lesions (Figure 1).
case_images: Lung biopsy shows hyaline amyloid deposits, predominantly in a perivascular pattern.
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case_images: Histopathology of biopsy of the right lung revealed pulmonary amyloidosis, mostly in a perivascular pattern, seen as hyaline deposits on Hematoxylin & Eosin stain (Figure 2).
case_images: Bone marrow biopsy shows abundant atypical plasma cells with immature nuclei
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case_images: A bone marrow biopsy revealed 25% plasma cells comprised predominantly of kappa-expressing cells (Figure 3).