Dictionary / Vocabulary / 管内
かんない
within the jurisdiction (of); one's jurisdiction; in a pipe
common word
明日の午前9時から消化管内視鏡検査を行いますので、今夜9時以降は絶飲食してください。
You're having a gastroscopy at nine o'clock tomorrow morning, so please don't have any solid food or liquids from nine o'clock tonight.