Palliative endoscopic surgery for sinonasal metastases: a case report and literature review.

Cancer metastatic to the paranasal sinuses often presents with ophthalmologic and facial deformities, as well as sinonasal complaints. These diminutive tumors are difficult to effectively treat, often leading to poor quality of life. Although breast cancer is a common cancer affecting more than 150,000 women each year, rarely is metastatic breast cancer found within the sinuses. We report our palliative treatment approach and outcomes of a 40-year-old patient with breast cancer metastatic to the paranasal sinuses. While providing a better understanding of this tumor's metastasis through a review of the literature, our report describes the role of palliative surgery for metastases to the paranasal sinuses.