Sinonasal tumors include a range of malignancies that can develop in the maxillary, ethmoid, sphenoid, or frontal sinuses, and in the nasal cavity. Squamous cell carcinoma and adenocarcinoma of the maxillary sinus, nasal cavity and the ethmoid sinus are the most common. Other common histologies include adenocarcinoma, adenoid cystic carcinoma, and mucoepidermoid carcinoma. Common initial symptoms include facial or dental pain, nasal obstruction, and epistaxis. Less common symptoms include cranial neuropathy, chronic sinusitis, facial edema, vision loss, headaches, rhinorrhea, and hyposmia. Computed tomography (CT) sinuses and magnetic resonance imaging (MRI) are both performed to evaluate disease extent, distinguish from benign causes. CT chest for earlier stage disease and positron emission tomography/CT for Stage III/IV patients. CT provides information about bone invasion and MRI about the involvement of soft tissues, nerves, skull base, and brain, and better differentiation of fluid from solid tumor.