世界卫生组织(World Health Organization,WHO)肺肿瘤分类认为,“气道播散 ”是肺腺癌侵袭的一种形式。新近在肺切除标本中描述了游离独立的细胞簇播散,其它方面被称为“通过刀切割面播散”的现象代表了人为制造现象。本研究的目的在于,前瞻性地研究这些游离独立的肿瘤细胞簇在外科肺癌手术切除标本中及与其可能相关巨检流程中的存在和频率。一项非小细胞肺癌切除标本的前瞻性、多学科研究已付诸实施。解剖时,第一个切面的刀片清洁无污染;第二刀切面与第一刀切面平行。从第一刀和第二刀切割组织的上下部分获得4组组织块。苏木精-伊红染色可以显示出良性和/或恶性组织碎片。我们对44例切除标本进行了研究。1~4组肿瘤细胞簇的平均数分别为0.36、1.44、1.86和1.95,良性片段分别为0.11、0.11、0.13和0.25。几乎所有细胞簇都在肺泡内。第1组与2~4组肿瘤细胞簇的比较结果差异显著,P值(弗里德曼重复试验值0.03)分别为0.031、0.02和0.05。总体而言,93%的松散组织碎片可以用与组织处理有关的机械力来解释。然而,2015年的肺肿瘤 WHO分类将通过气道传播作为肺癌侵袭的一种形式具有争议的,在许多情况下表现为机械、人为所致,包括沿解剖刀面播散。
来源:Am J Surg Pathol 2017;41:1226-1230
美国外科病理学杂志中文版2018年第一期摘要No.4
(李晟磊 翻译/审校)
The American Journal of Surgical Pathology中文版声明:
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