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Histiocytic and Dendritic Cell Neoplasms

机译:组织细胞和树突细胞瘤

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Histiocytic and dendritic cell neoplasms are very rare, belonging to a group that share morphologic, immunophenotypic, and ultra-structural characteristics of mature histiocytic/ dendritic neoplasms. Histiocytic and dendritic cell neoplasms may arise de novo or in association with B-cell, T-cell, or myeloid neoplasms. Recent molecular findings, particularly the discoveries of the mutations in the RAS-RAF-MEK-ERK pathway, have greatly advanced the diagnosis and treatment options. Histiocytic and dendritic cell neoplasms may closely resemble each other, non-hematopoietic neoplasms, and even reactive processes. Therefore, it is essential to understand the clinicopathologic characteristics, differential diagnoses, and pitfalls of each entity.
机译:组织细胞和树突细胞瘤是非常罕见的,属于共享成熟组织细胞/树突式肿瘤的形态学,免疫型和超结构特征的组。 组织细胞和树突细胞瘤可以出现De Novo或与B细胞,T细胞或髓鞘肿瘤结合。 最近的分子发现,特别是Ras-Raf-Mek-ERK途径中突变的发现,大大提高了诊断和治疗方案。 组织细胞和树突细胞肿瘤可能与彼此密切类似,非造血肿瘤,甚至是反应过程。 因此,必须了解每个实体的临床病理特征,差异诊断和陷阱。

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