A patient consulted a noted colorectal surgeon after experiencing episodes of rectal bleeding over the last 2 weeks.The patient had a screening colonoscopy 5 years ago with several adenomatous polyps and mild diverticular disease.She presents to the endoscopy suite after a successful bowel prep and NPO since midnight.The GI endoscopist is confident that he will find tumor growth in the rectum and decides to employ further diagnostic applications to determine potential for metastasis.Which of the following endoscopic procedures best describes the patient's procedure?

Question

Quizplus · Accepted Answer

Colonoscopy provides endoscopic visualization of the colon from the rectum to the ileocecal valve.The clinician inspects the mucosa for abnormalities such as sites of bleeding,polyps,inflammation,ulceration,or tumors during both insertion and withdrawal of the colonoscope.Colonoscopy can be diagnostic and therapeutic.An endoscopic ultrasound (EUS)combines endoscopy and ultrasound,using sound waves to generate an image of the histologic layers of the esophageal,gastric,and intestinal walls.EUS is critically important in staging GI malignancies and determining surgical options and potential for therapeutic resection.The frequencies used,higher than those used in traditional ultrasound,provide highly accurate depths of any mucosal invasion.

A Patient Consulted a Noted Colorectal Surgeon After Experiencing Episodes