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Sinonasal undifferentiated carcinoma (SNUC) is a rare tumor which usually seen in nasal cavity and maxillary sinus. It has different clinical courses in contrast to sinonasal carcinoma and has poor prognosis. We have encountered a case of SNUC in frontal sinus which is a very rare site for SNUC to occur.
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Rajkumar et al. (2023) studied this question.
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