Abstract
Abstract Sinonasal non-intestinal-type adenocarcinoma is a rare but important differential diagnosis in patients presenting with recurrent, unexplained epistaxis. Low-grade types have a more favourable prognosis as opposed to the more aggressive high-grade. Symptoms include nasal obstruction and epistaxis that can last up to 5 years. We report a case of a rare low-grade sinonasal non-intestinal-type adenocarcinoma in a 43-year-old male who is frequently exposed to wood and dust particles. Endoscopy revealed right nasal mass occupying the entire nasal cavity as well as inferior turbinate hypertrophy and mass attached to the nasal septum on computed tomography. Biopsy confirmed the diagnosis and was classified as pT1NX with the presence of mitotic figures, which are more commonly present in the high-grade subtype.
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