MUC16 and neoplasm: Routine biochemistry was normal, and tumor markers carcinoembryomic antigen (CEA = 4 μg/l), cancer antigen 125 (CA125 = 42kU/l), carbohydrate antigen 19–9 (CA19–9 < 5 kU/l), and chromogranin A(CgA = 2.8 nmol/l) were all within normal ranges.