Nasopharyngeal cancer is a type of cancer that occurs in the nasopharynx, the area located behind the nose and above the back of the throat. This cancer is relatively rare and is more common in certain regions, particularly in Southeast Asia. Symptoms may include a lump in the neck, nasal congestion, hearing loss, and frequent nosebleeds. The exact cause of nasopharyngeal cancer is not fully understood, but it is associated with factors such as Epstein-Barr virus infection, genetic predisposition, and exposure to certain environmental toxins. Treatment options typically include radiation therapy, chemotherapy, and sometimes surgery, depending on the stage of the disease.