noun
Medical instrument used to examine the large intestine.
医師は大腸内視鏡を使って大腸の内部を観察した。
The doctor used a colonoscope to observe the inside of the large intestine.
noun
The procedure of examining the colon with a colonoscope.
来週、大腸内視鏡の検査を受ける予定です。
I am scheduled to have a colonoscopy next week.