Sinonasal Small Round Blue Cell Tumors: An Immunohistochemical Approach

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• 作者：Lisa M. Rooper ; MD^a ; Justin A. Bishop ; MD^b ; ^c ; ^{jbishop@jhmi.edu}
• 关键词：Sinonasal tumors ; Small round blue cell tumors ; Immunohistochemistry ; Cytokeratin ; Squamous differentiation ; Neuroendocrine differentiation
• 刊名：Surgical Pathology Clinics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：10
• 期：1
• 页码：103-123
• 全文大小：21701 K
• 卷排序：10

文摘

Although clinical history and morphologic appearance should be the initial considerations when evaluating small round blue cell tumors of the sinonasal tract, the final diagnosis often hinges on immunohistochemical findings. Unfortunately, interpretation of stains in these tumors is fraught with numerous pitfalls and limitations. This article presents an approach to sinonasal small round blue cell tumors based on four common immunohistochemical patterns: cytokeratin positivity, squamous marker positivity, neuroendocrine marker positivity, and cytokeratin negativity.