Localized Lymph Node Light Chain Amyloidosis

Figure 1

(a) Lymph node replaced by amorphous, eosinophilic, extracellular material (amyloid), (b) high power magnification of the amyloid with few admixed multinucleated giant cells (arrowed), and (c) Congo red stain demonstrating apple green birefringence, diagnostic of amyloid.

(a)

(b)

(c)