Oncology (General Cancer)/Can pancreatic cancer change your blood type?
I'm 28 years old, female.
I've recently done some usual pre-pregnancy tests and I was very surprised to find out that my blood type came out as B+. I double checked it with a different lab so I'm sure it's B. But I know both my parents have type O so genetically speaking I couldn't come out a B...
I'm very worried because this doesn't make sense. I've never officially checked my blood type before as my mother always told me I must have O blood because both her and my father have O.
I was reading online that rarely, some cancers can change your blood type. I read that pancreatic cancer cells can aberrantly manifest A and B antigens, but I'm not sure if they can actually change your blood type.
In the past 2 months I've lost around 2 pounds and then gained 1 back and I have a feeling of fullness in my stomach especially when I eat, which causes me to eat less. My appetite is also low and sometimes I feel I have a knot in my stomach even when it's empty.
Should I be worried about pancreatic cancer? Can pancreatic cancer change blood type from O to B?
I also suffer from health anxiety (my mother died from breast cancer) so I can't tell if these symptoms are due to my strong anxiety or a real, serious problem, but the B type blood was an unexpected result.
Thank you for any answer and for your patience!
When blood is typed, what is being measured is an antigen on the surface of the cell. Pancreatic cancer can manifest those antigens, on the cell surfaces of the cancer. They can't actually change your blood type. Therefore, barring a mistake on the part of the people who checked your type, and indeed, it would not be likely, there are two possibilities; a) you were adopted; or b) one or both of your parents may actually be heterozygous for the b antigen. They should be re-checked.
As for your symptoms, I strongly doubt they are due to pancreatic cancer. That disease is almost never seen in someone your age. Obviously they are of concern, and outside of symptoms of anxiety, problems include ulcer, gall stones, pancreatitis, etc.
I'd check into these things but I wouldn't be concerned about cancer.