経鼻 けいび内視 ないし きょうではありません
keibi nai shikyōdewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 経鼻内視鏡

1. Is not a nasal endoscopy.; Is not a nasal endoscope.

Negative
Polite
Formal Register