Sagong Borum, Seo Young Joon, Lee Hyun-Jin, Kim Mi Joo, Kim Un-Kyung, Moon In Seok
Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea.
Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea.
Fam Cancer. 2016 Oct;15(4):601-6. doi: 10.1007/s10689-016-9874-8.
Familial paraganglioma (PGL) is a dominantly inherited disorder characterized by development of PGLs in the head and neck region. Germline mutations in genes coding for succinate dehydrogenase (SDH) subunits D, B, and C (SDHD, SDHB, SDHC) are found in almost all familial PGL patients. A 19-year-old female presented with pulsatile tinnitus and a reddish pulsating mass in the external auditory canal, and her mother complained of similar symptoms. Paraganglioma was found in both patients and was surgically removed. We report a case of germline SDHB mutation. This mutation was a deletion of thymine at nucleotide position 757 in exon 7 of the SDHB gene (c.757delT).