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Mesenchymal Stem Cells01:19

Mesenchymal Stem Cells

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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma
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儿科介质细胞瘤 在儿童中

Omar Aljuboori1, Ali G Saad2

  • 1University of Miami Miller School of Medicine, Holtz, Miami, FL.

Advances in anatomic pathology
|December 13, 2024
PubMed
概括

儿科介质瘤,包括血管,纤维和肌源性类型,由于重叠的特征,存在诊断挑战. 分子分析对于准确的分类和理解这些具有挑战性的儿科瘤的发病过程至关重要.

科学领域:

  • 儿科瘤学 儿科瘤学
  • 手术病理学的外科病理学
  • 分子诊断学 分子诊断学

背景情况:

  • 儿童中介细胞瘤很常见,包括血管,纤维/肌纤维细胞和肌原性类型.
  • 这些瘤经常表现出重叠的形态和免疫类型特征,使准确的诊断和分类变得复杂.
  • 免疫组织化学的进步有助于区分,但一些瘤仍然难以分类.

研究的目的:

  • 为了审查常见的儿科介质细胞瘤.
  • 要突出关键的组织学特征,免疫特征和分子特征.
  • 为儿童介质瘤的诊断挑战提供实用概述.

主要方法:

  • 文献综述专注于儿科介质细胞瘤.
  • 诊断挑战的分析,包括形态学和免疫类型.
  • 强调分子研究在分类和理解病变发生过程中的作用.

主要成果:

  • 形态和免疫类型的显著重叠使诊断复杂化.
  • 免疫组织化学提供了一些诊断清晰度,但存在局限性.
  • 分子研究越来越重要,识别新的瘤实体 (例如,EWING家族瘤,CIC重排的肉瘤,BCOR重排的肉瘤).

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结论:

  • 准确分类儿科介质瘤需要整合组织学,免疫类型和分子数据.
  • 分子异常对于诊断某些类型的肉瘤至关重要.
  • 本综述强调了分子表征对于理解和诊断儿科介质细胞瘤的重要性.