Figure 3From: Extraosseous (extramedullary) plasmacytomas: a clinicopathologic and immunophenotypic study of 32 Chinese casesHistopathologic features of EMP. A. Dutcher's body (case 1). B. tumor giant cells (case 24). C. Amyloid deposition stained by congo red (case 9). D. Amyloid deposition stained by congo red showed a characteristic "apple-green" birefringence under polarized light (case 9).Back to article page