Breast Cancer Expert Forum
Thyroid Dysfunction ( in this case Hashimoto's thyroiditis)
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Avatar universal
Thyroid Dysfunction ( in this case Hashimoto's thyroiditis)
I am a 4 year breast cancer survivor. I received the Adriamycin-Cytoxan chemotherapy protocol.

I have been diagnosed with Hashimoto's disease. I strongly suspect it did something to my thyroid. I don't see how the chemotherapy could not have effected my thyroid or whatever else for that matter.  It was dreadful and so caustic.

Is there any research or notion in the medical field of chemotherapy inducing thyroid dysfunction?

thanks

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Avatar universal
Dear lionandlamb:  It is unlikely that your chemotherapy has contributed to your thyroid disease.  Thyroid problems are common in people who have had mantle radiation (radiation that includes the thyroid gland) for Hodgkin's disease, for example.
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Boy, does this sound familiar!  About 3 years after I finished chemo, I had to have thyroid surgery.  A co-worker had the same problem and had thyroid surgery about 3 years after completing chemo.  Her thyroid quit working.  Mine was on its way out and had developed nodules.  On the Komen website, if you go to the talkback section, you will find that thyroid problems after chemo are very common.  My surgeon explained to me that chemo affects the thyroid and in some cases, it is not able to recover when the chemo treatments are over.  Now, whenever someone has chemo, I always tell them to have their thyroid function checked afterwards if they start having the symptoms of underactive thyroid.
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Avatar universal
rkmsim:   Thank you for that acknowledgement and you're surgeon was very progressive to have warned you to watch your thyroid after chemo.  I think that that is the first I have heard of any doctor giving such knowledgeable and proactive advice to a patient.  I will check the Komen website also.

Also I am ticked off at my now former oncologist ... who is also an internist/hematologist ... I went to him for bloodwork every 3-4 months for 3 years after chemo ... he was very aware of my 'refractive' (as he called it symptoms) and Never thought to check my thyroid.   His secretary said that it's not protocol in BC to check thyroid.  That may well be the case as it stands now in BC oncology, but I used this guy long before my BC for complaints of fatigue.   UNBELIEVABLE.
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