Imaging examination methods for nasopharyngeal carcinoma

Nasopharyngeal carcinoma occurs in deep parts of the body, and early symptoms are not obvious. Early diagnosis often requires imaging examination results. The following examination methods are commonly used in clinical practice:

1. Posterior nasal endoscopy shows that nasopharyngeal carcinoma is more likely to occur in the pharyngeal recess and the anterior wall of the nasopharyngeal roof, often presenting as small nodules or granuloma-like protrusions with a rough and uneven surface that is prone to bleeding, and sometimes presenting as submucosal protrusions with a smooth surface. Early lesions are atypical, showing only mucosal congestion, vascular distention, or a fuller pharyngeal recess on one side, and these lesions should also be paid special attention to.

2. Electronic fiber nasopharyngoscope or fiber nasopharyngoscope or nasal endoscopy These endoscopic examinations are helpful in finding small lesions in patients with early nasopharyngeal carcinoma. When suspicious lesions are found, local tissue can be taken for biopsy under direct vision of the nasal endoscope. When taking biopsy tissue, if the tumor surface is covered with mucosa, the mucosa should be bitten off first and then the forceps head should be extended under the mucosa for deep biting.

3. CT and MRI examinations CT and MRI examinations are helpful in understanding the scope of tumor invasion and the degree of skull base bone destruction. MRI examinations are mainly used for the diagnosis of nasopharyngeal carcinoma. Its accuracy is higher than CT, but it is more expensive. CT examinations are mainly used for radiotherapy positioning and target area delineation and guidance for treatment planning.