Case List History Objectives Radiology Images Questions COLORECTAL DISEASE Case #8 - A 55 year old male with 3 months rectal bleeding DISCUSSION QUESTIONS: 5.) What are the roles of endoscopic ultrasound, colonoscopy, and rigid proctoscopy in this evaluation? Diagnostic evaluation: a. Colonoscopy: to identify lesion and allow biopsy; to detect other lesions b. Rigid proctoscopy: to measure the level of the inferior margin of the lesion c. Endoscopic ultrasound: to observe depth of invasion of the lesion and presence of perirectal nodes.
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