Nasopharynx is lined by cliliated column epithelium . Then how nasopharyngeal carcinoma is Squamous type ?
The transition from ciliated columnar epithelium of nasopharynx to stratified squamous epithelium of the oropharynx occurs at the lower end of the nasopharynx. The tumour originates from this area .
okay maam . Thank you !
Due to Metaplasia