Which of the following statement(s) is/are correct with regard to the use of carcinoembryonic antigen (CEA) determinations in management of colorectal cancer?
A. CEA determination has 95% specificity when used for screening for colon cancer development in patients with ulcerative colitis
B. CEA levels are increased in 20% of patients with local recurrence after resectional therapy
C. CEA measurements are increased in 90% of patients with disseminated disease
D. CEA levels are increased in 90% of patients with local recurrence after resectional therapy
Answer:B
Which of the following statement(s) is/are correct with regard to the use of carcinoembryonic antigen (CEA) determinations in management of colorectal cancer?
A. CEA determination has 95% specificity when used for screening for colon cancer development in patients with ulcerative colitis B. CEA levels are increased in 20% of patients with local recurrence after resectional therapy C. CEA measurements are increased in 90% of patients with disseminated disease D. CEA levels are increased in 90% of patients with local recurrence after resectional therapy