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Fig. 4 | BMC Surgery

Fig. 4

From: Haemorrhagic retroperitoneal paraganglioma initially manifesting as acute abdomen: a rare case report and literature review

Fig. 4

Immunohistochemistry of the retroperitoneal tumour. Immunohistochemical staining of the retroperitoneal tumour revealed the following staining results: CgA (+) (a), Syn (+) (b), DOG1 (−) (c), S-100 (−) (d), CD56 (+) (e), AE1/AE3 (−) (f), CD117 (+) (g), and Ki-67 (10%, +) (h, i). (a, b, c, d, e, f, g and h: × 400 magnification. i × 100 magnification). The tumor cells showed diffuse and strong expression of Cg A, Syn and CD56. The Ki67 index was approximately 10%

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