Abstract
Familial catecholamine secreting tumors have been associated with multiple endocrine neoplasia type 2, Von Hippel-Lindau disease and neurofibromatosis type 1. In the last years, mutations of genes encoding subunits B, C and D of the succinate dehydrogenase have been discovered as other causes of pheochromocytomas and paragangliomas. We diagnosed a malignant retroperitoneal paraganglioma in a 64-yr-old man with bone metastasis in 2001. Two years later a retroperitoneal benign paraganglioma was found and resected in his 32-yr-old daughter. Thus we diagnosed in this family a paraganglioma syndrome. We performed molecular genetic analyses of the genes SDHB, SDHC, and SDHD. We detected in the SDHB gene the mutation SDHB c. 558–3 C>G affecting the splice site of exon 5. In a second daughter the mutation was also detected, thorough clinical investigation revealed normal results. We conclude that the SDHB mutation predisposes to abdominal extra-adrenal and potential malignant pheochromocytoma with incomplete penetrance.
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Fuentes Gómez, C., Menéndez, E., Pineda, J. et al. The malignant potential of a succinate dehydrogenase subunit B germline mutation. J Endocrinol Invest 29, 350–352 (2006). https://doi.org/10.1007/BF03344107
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DOI: https://doi.org/10.1007/BF03344107