I actually already checked my lab results online on Saturday, and I saw that there were a handful of abnormal results. I did some Googling to put some context around them, and felt a bit alarmed. I decided not to blog about it until after I had a chance to talk everything over with my oncologist or oncology NP.
This whole exercise really showed why patients like me should not access their test results online without first discussing results with the doctor! Seeing my results with no context did make me worry. On the other hand, though, I am glad I did a little research in advance, so I wasn't caught completely off guard, and had time to prepare some questions... I really don't know how a happy medium could be achieved.
So, this is what I discovered on my own, on Saturday. First, the same liver enzymes (ALT and AST) are still just a little out of range. This time, I made a point to not drink and not take Tylenol for at least 4 days prior to getting my blood drawn, so those factors could be ruled out.
High ALT and AST can indicate fatty liver disease. Turns out, being Asian and post-menopausal are risk factors. High blood pressure and high cholesterol are also risk factors, and though I haven't been diagnosed with either condition, some test results have put me on the high end for both. And, importantly, Tamoxifen also increases my risk.
My folate (also known as folic acid) and ferritin numbers also came back high. I couldn't find much of a correlation between these numbers and Tamoxifen, but I did find some academic articles about iron and breast cancer and ferritin and breast cancer. I didn't really understand the implications of these articles, but they made me feel uneasy. Luckily, I also found some articles linking high ferritin with non-alcoholic fatty liver disease. Not that having fatty liver disease would be good, but it's better than having cancer again.
There was one other result, my Hepatitis A antibody test, which came back positive. I was initially confused and had no idea how I could have gotten Hepatitis A, but then I saw that the test can also indicate if someone is immune from a prior vaccination. Thanks to my obsessive record-keeping, I know that I got 1st and 2nd doses of the Hepatitis A vaccine in 2012, motivated by a trip to Mexico.
When my medical oncology NP called today, I was already armed with all of the above. Still, I pretended I hadn't checked my results yet, so as not to influence what she would say.
The NP said my oncologist is "not worried about a cancer problem." (Phew!)
She thinks I may have fatty liver disease, and is recommending an ultrasound. If the ultrasound shows fatty liver, then I will be referred to a liver doctor, which I had to Google to find out is called a hepatologist. My NP was careful to reassure me that fatty liver is a condition that you can just live with.
If the ultrasound does not show fatty liver, then they will do additional tests to see if I have hemochromatosis, a condition that causes the body to store too much iron. If I have that, it would be managed in the Cancer Center, which includes hematology, but I would still be referred to a hepatologist for overall liver care.
Sounds like either way, I'm going to be seeing a hepatologist. I have to say, the prospect of having yet another specialist is discouraging, but I guess I should just be thankful it's not a cancer recurrence.
For now, I am going to consider my liver issue as part of this cancer blog. My research clearly said Tamoxifen is a risk factor for fatty liver, but when I asked my NP about it, she said they have a lot of patients on Tamoxifen in the Cancer Center, but they do not see a lot of cases of fatty liver. She thinks it's just something that would have developed anyway, which may be possible given my other risk factors. Still, I'm not ruling it out, and I'll plan to ask the hepatologist about it.
A couple other things worth noting. First, my NP did not mention my very high ferritin number. When I asked about that, she said it's just another indication of something going on with my liver, and could be consistent with either fatty liver or hemochromatosis.
The other thing is, she said the Hepatitis A result showed a past infection, but nothing current. I asked if that test might be positive because I've been vaccinated for Hepatitis A. She said yes, but was surprised because apparently adults being vaccinated for Hepatitis A isn't common, and she even thought I might have been confusing it with Hepatitis B. Good thing I had already confirmed my vaccination status!