A 65-year-old man presents to the emergency department after he had abnormally tarry-colored stool on multiple occasions. He has had gastrointestinal discomfort and has felt increasingly tired during the past 2 months. Physical examination reveals subsequently colonoscopy identified a circumferential mass in the sigmoid colon. A biopsy was performed, which identified the mass as an adenocarcinoma. CEA level was obtained as part of the presurgery workup. a guaiac-positive stool. A

Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
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CASE STUDY 32.2
A 65-year-old man presents to the emergency department after he had
abnormally tarry-colored stool on multiple occasions. He has had
gastrointestinal discomfort and has felt increasingly tired during the past 2
months. Physical examination reveals a guaiac-positive stool. A
subsequently colonoscopy identified a circumferential mass in the sigmoid
colon. A biopsy was performed, which identified the mass as an
adenocarcinoma. CEA level was obtained as part of the presurgery workup.
questions
1. Is the CEA test useful as a screening test for colon carcinoma?
2. What other conditions can result in elevated CEA levels?
3. How is CEA used to monitor patients after surgery for colon cancer?
Transcribed Image Text:CASE STUDY 32.2 A 65-year-old man presents to the emergency department after he had abnormally tarry-colored stool on multiple occasions. He has had gastrointestinal discomfort and has felt increasingly tired during the past 2 months. Physical examination reveals a guaiac-positive stool. A subsequently colonoscopy identified a circumferential mass in the sigmoid colon. A biopsy was performed, which identified the mass as an adenocarcinoma. CEA level was obtained as part of the presurgery workup. questions 1. Is the CEA test useful as a screening test for colon carcinoma? 2. What other conditions can result in elevated CEA levels? 3. How is CEA used to monitor patients after surgery for colon cancer?
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