Fig. 1From: Identification of a novel SDHB c.563 T > C mutation responsible for Paraganglioma syndrome and genetic analysis of the SDHB gene in China: a case reporta-c CT and MRI showed a 4.6 × 3.1 cm retroperitoneal mass on the right retroperitoneum, and the boundary between the mass and the IVC was not clear; d-f Pathology and immunohistochemical staining: Syn and CgA were positive, Melan A, HMB45 and α-inhibin were negative, S-100 cells were positive, and the CD31 vascular endothelium marker was positiveBack to article page