02 October 2023
: Case report 
A Rare Case of Subcutaneous Amyloidoma Associated with Localized Lymphoplasmacytic Lymphoma: Diagnostic Challenges and Treatment Considerations
Rare disease, Rare coexistence of disease or pathology
Lisa Francesca Vivian
1ABDEF*, Lukas Marcelis 23ABDE, Eleonora Leoni4D, Yves De Bruecker5BD, Helena Maes6BD, Erwin Pierré7BD, Florence M. Ballaux7BD, Thomas Tousseyn 23ABCDEFG
DOI: 10.12659/AJCR.940789
Am J Case Rep 2023; 24:e940789
Figure 2. Congo red stain confirming the presence of a nodular, tumor-like deposit of amyloid (amyloidoma). The glassy extracellular material brightly stains with Congo red: it is intimately admixed with the lymphoplasmacytic population (A: ×100) and also thickens the vessel walls (C: ×100). The typical apple-green birefringence under polarized light confirms this is amyloid (B, D: ×100).