Nasopharyngeal carcinoma clinical manifestations
Nasopharyngeal carcinoma is the most common malignant tumor in the nasopharyngeal area, and clinically, it is primarily squamous cell carcinoma. The incidence of nasopharyngeal carcinoma is particularly high in the southern regions of China, especially in Guangdong. Initially, nasopharyngeal carcinoma manifests locally as a tumorous mass in the nasopharyngeal area, often with ulceration on the surface. This can lead to the presence of blood in nasal mucus, known as bloody nasal discharge. As the disease progresses, there can be swelling of the cervical lymph nodes, primarily involving the upper deep cervical lymph nodes, with about 60% of patients experiencing this type of lymph node enlargement. As the tumor enlarges, it may block the nasal passage, leading to persistent nasal congestion. The tumor's pressure on the Eustachian tube can cause symptoms of secretory otitis media. Furthermore, damage to the skull base by the tumor can lead to severe headaches. As a malignant tumor, the cancer can cause systemic symptoms such as malnutrition and cachexia. In advanced stages, metastatic symptoms may appear, such as bone and liver metastases, affecting these vital organs.