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

Figure 5 Raman spectra of the target and control areas. The following peaks are seen in the target area: 1000-1300 cm^-1, P-O and P=O bonds of phosphate (partially overlapping with the alkyl group signal); 1400-12800 cm^-1, C-H bonds of saturated hydrocarbon groups; 1600-13800 cm^-1, C=C bonds of unsaturated hydrocarbons; 1700 cm^-1, C=O bonds of esters.