A Rare Case of Light Chain Amyloidosis of the Gastrointestinal Tract

Figure 4

Bone marrow biopsy showing a plasma cell neoplasm with lambda light chain restriction. Clusters of plasma cells in perivascular spaces highlighted by CD-138 immunostaining (a) with strong expression of lambda light chain (λ (b)) and negativity for kappa light chain (κ (c)). All microphotographs shown at high magnification, 600x.

(a)

(b)

(c)