If the item swallowed was translucent, a contrast esophagoscopy will need to be performed in order to detect the item and where it is located. (lyndenvet.com)
Clinicians are skilled in endoscopic techniques and have the most advanced instruments necessary to perform such diagnostic tests as gastroscopy, esophagoscopy, colonoscopy, bronchoscopy, rhinoscopy, cystoscopy, and laparoscopy. (cvm.ncsu.edu)
Among the tests used to determine the cause of your pet's vomiting are X-rays, barium X-rays, toxicology testing, fluoroscopy, esophagoscopy, muscle biopsy, and food allergy testing. (1800petmeds.com)