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Molecular characterization of sessile serrated adenoma/polyps with dysplasia/carcinoma based on immunohistochemistry next-generation sequencing and microsatellite instability testing: a case series study

机译:基于免疫组织化学下一代测序和微卫星不稳定性测试的无固定型锯齿状腺瘤/息肉伴不典型增生/癌的分子表征:案例研究

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摘要

BackgroundColorectal sessile serrated adenoma/polyps (SSA/Ps) are considered early precursor lesions in the serrated neoplasia pathway. Recent studies have shown associations of SSA/Ps with lost MLH1 expression, a CpG island methylator phenotype, and BRAF mutations. However, the molecular biological features of SSA/Ps with early neoplastic progression have not yet been fully elucidated, owing to the rarity of cases of SSA/P with advanced histology such as cytologic dysplasia or invasive carcinoma. In this study, we aimed to elucidate the molecular biological features of SSA/Ps with dysplasia/carcinoma, representing relatively early stages of the serrated neoplasia pathway.
机译:背景结直肠无蒂锯齿状腺瘤/息肉(SSA / Ps)被认为是锯齿状瘤形成途径中的早期前体病变。最近的研究表明SSA / Ps与失去的MLH1表达,CpG岛甲基化者表型和BRAF突变相关。然而,由于具有高级组织学例如细胞学异常增生或浸润性癌的SSA / P病例的罕见性,尚未明确阐明具有早期肿瘤进展的SSA / P的分子生物学特征。在这项研究中,我们旨在阐明具有发育异常/癌的SSA / Ps的分子生物学特征,它们代表锯齿状瘤形成途径的相对早期。

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