â¢ If your cat has peed on the bed, clean the bed properly and make sure that no odor remains. If your kitty can smell the odor of her urine n the bed, chances are thick that she will pee in the same spot again.She will start to treat the bed as her litter box every time. If your cat has peed on the bed, clean the bed properly and make sure that no odor remains. If your kitty can smell the odor of her urine n the bed, chances are thick that she will pee in the same spot again.
paranasal sinus, any one of the air cavities in various bones around the nose, such as the frontal sinus in the frontal bone lying deep to the medial part of the superciliary ridge and the maxillary sinus within the maxilla between the orbit, the nasal cavity, and the upper teeth. See also accessory nasal sinuses.
1 Paranasal sinus and nasal cavity cancer is a disease in which malignant (cancer) cells form in the tissues of the paranasal sinuses and nasal cavity. 2  Different types of cells in the paranasal sinus and nasal cavity may become malignant.The most common type of paranasal sinus and nasal cavity cancer is squamous cell carcinoma. This type of cancer forms in the squamous cells (thin, flat cells) lining the inside of the paranasal sinuses and the nasal cavity. Signs of paranasal sinus and nasal cavity cancer include sinus problems and nosebleeds. 2  Tests that examine the sinuses and nasal cavity are used to detect (find) and diagnose paranasal sinus and nasal cavity cancer. 3  Certain factors affect prognosis (chance of recovery) and treatment options.