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Features of nonkeratinizing squamous cell carcinoma. Early nodal metastasis: a biopsy showing apparent in situ carcinoma (×20 magnification); b large (>5 cm) neck lymph node metastasis from the same patient as a (×0.5). Anaplasia and multinucleation: c Another nonkeratinizing squamous cell carcinoma that shows numerous anaplastic nuclei (×40 magnification); d nonkeratinizing squamous cell carcinoma showing numerous multinucleated, large and bizarre tumor cells (×40)
