A 65-year-old man is seen two years following right hemicolectomy for a Duke’s B-2 carcinoma of the cecum. Although asymptomatic, the CEA level has risen four-fold from a value obtained six months previously. Computed tomography reveals a single, 3 cm lesion in the right hepatic lobe. There is no evidence of extra-hepatic metastatic disease and the patient undergoes right hepatic lobectomy. Which of the following correctly represents the chance of overall 5 year survival?
A.	15%
B.	33%
C.	50%
D.	66%
Answer:B
A 65-year-old man is seen two years following right hemicolectomy for a Duke’s B-2 carcinoma of the cecum. Although asymptomatic, the CEA level has risen four-fold from a value obtained six months previously. Computed tomography reveals a single, 3 cm lesion in the right hepatic lobe. There is no evidence of extra-hepatic metastatic disease and the patient undergoes right hepatic lobectomy. Which of the following correctly represents the chance of overall 5 year survival?
A.	15% B.	33% C.	50% D.	66%