Phosphoglyceride crystal deposition disease requiring differential diagnosis from malignant tumors and confirmed by Raman spectroscopy: A case report

Figure 4 Histopathological findings of the surgical specimens. A and B: Histopathological findings show a well-demarcated nodule of needle-like crystals surrounded by a fibrous capsule, with histiocytes and multinucleated giant cells (hematoxylin and eosin stain; A: × 200; B: × 400); C: Histiocytes are immunohistochemically positive for CD68 (× 200).