A 65-year-old man from China presents to his doctor complaining of increased abdominal girth, weight loss, and fever. Physical exam is remarkable for right upper quadrant tenderness and organomegaly. Tissue biopsy is positive for a primary malignancy. What tumor marker is most likely elevated in this patient?
A. Alphafetoprotein (AFP)
B. CA-125
C. CA19-9
D. Carcinoembryonic antigen (CEA)
E. S-100
A. Alphafetoprotein (AFP)
B. CA-125
C. CA19-9
D. Carcinoembryonic antigen (CEA)
E. S-100