File Name : supplemental figure 1.jpg

Caption : supplemental figure 1. the mean spectrum of 20 benign and 10 malignant (5 cases metastasize during the follow-up period, and other 5 cases defined as malignant by pathological records but didn’t metastasize during the follow-up period) pheochromocytoma/paraganglioma tissues and the corresponding significance (1-p value) of student’s t test along with the spectral axis (a). a scatter polt of the spectral for benign and malignant ppgl (b) used to develop the model projected onto a plane in pricipal component.