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*[[NUT carcinoma]] - has well-differentiated squamous "islands" that are sharply demarcated from poorly differentiated surrounding tumour. | *[[NUT carcinoma]] - has well-differentiated squamous "islands" that are sharply demarcated from poorly differentiated surrounding tumour. | ||
*[[Neuroendocrine tumour]]. | *[[Neuroendocrine tumour]]. | ||
*Metastatic [[skin SCC|squamous cell carcinoma of skin]] - esp. parotid lesions; history of skin SCC. | *Metastatic [[skin SCC|squamous cell carcinoma of skin]] - esp. parotid lesions; history of skin SCC (esp. lateral aspect of head).<ref name=pmid16783833>{{cite journal |vauthors=Vauterin TJ, Veness MJ, Morgan GJ, Poulsen MG, O'Brien CJ |title=Patterns of lymph node spread of cutaneous squamous cell carcinoma of the head and neck |journal=Head Neck |volume=28 |issue=9 |pages=785–91 |date=September 2006 |pmid=16783833 |doi=10.1002/hed.20417 |url=}}</ref> | ||
====Invasion==== | ====Invasion==== |
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