You searched for: “endoscopies
endoscopy (s) (noun), endoscopies (pl)
A type of medical examination in which a medical device is passed into an area of the body; for example, the bladder or the intestines: "The process of endoscopy usually includes a fiberoptic camera, which allows a greatly magnified image to be projected onto a video screen, to be viewed by the medical operator."

"Often during the endoscopy, the operator can retrieve a small sample (biopsy) of the area being examined, in order to more closely view the tissue under a microscope."

"With advances in imaging and miniaturization of endosurgical equipment, surgery can be performed during endoscopy."