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ISSN: 1233-9687
Polish Journal of Pathology
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vol. 67
Review paper

Review of succinate dehydrogenase-deficient renal cell carcinoma with focus on clinical and pathobiological aspects

Naoto Kuroda
Kenji Yorita
Makoto Nagasaki
Yuji Harada
Chisato Ohe
Jera Jeruc
Maria Rosaria Raspollini
Michal Michal
Ondrej Hes
Mahul B. Amin

Pol J Pathol 2016; 67 (1): 3-7
Online publish date: 2016/05/10
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Succinate dehydrogenase (SDH)-deficient renal cell carcinoma (RCC) was first identified in 2004 and has been integrated into the 2016 WHO classification of RCC. Succinate dehydrogenase (SDH) is an enzyme complex composed of four protein subunits (SDHA, SDHB, SDHC and SDHD). The tumor which presents this enzyme mutation accounts for 0.05 to 0.2% of all renal carcinomas. Multiple tumors may occur in approximately 30% of affected patients. SDHB-deficient RCC is the most frequent, and the tumor histologically consists of cuboidal cells with eosinophilic cytoplasm, vacuolization, flocculent intracytoplasmic inclusion and indistinct cell borders. Ultrastructurally, the tumor contains abundant mitochondria. Immunohistochemically, tumor cells are positive for SDHA, but negative for SDHB in SDHB-, SDHC- and SDHD-deficient RCCs. However, SDHA-deficient RCC shows negativity for both SDHA and SDHB. In molecular genetic analyses, a germline mutation in the SDHB, SDHC or SDHD gene (in keeping with most patients having germline mutations in an SDH gene) has been identified in patients with or without a family history of renal tumors, paraganglioma/pheochromocytoma or gastrointestinal stromal tumor. While most tumors are low grade, some tumors may behave in an aggressive fashion, particularly if they are high nuclear grade, and have coagulative necrosis or sarcomatoid differentiation.

succinate dehydrogenase, renal cell carcinoma, review

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