Undifferentiated malignant neoplasms of the sinonasal tract.

  title={Undifferentiated malignant neoplasms of the sinonasal tract.},
  author={Bruce M. Wenig},
  journal={Archives of pathology & laboratory medicine},
  volume={133 5},
CONTEXT The most commonly encountered malignant neoplasms of the sinonasal tract are the keratinizing and nonkeratinizing types of squamous cell carcinoma. However, this complex anatomic region may represent the site of aggressive, non-squamous cell epithelial and nonepithelial malignant neoplasms of varying histogenesis, which are grouped under the term undifferentiated malignant neoplasms. Frequently, these undifferentiated malignancies share clinical and light microscopic features, which… CONTINUE READING

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