The debate between getting a total thyroidectomy (TT) and a partial thyroidectomy ( PT) is usually a heated one. Reading posts over the years, from thyroid cancer patients on various thyroid cancer websites, it seems to me that people feel strongly one way or the other ( TT or PT). I believe that this is not a " one solution fits all" but there are several things to consider with both surgeries. I have tried my best to present the arguments for both groups in a non-biased manner, but I need to make a disclosure. For my thyroid cancer ( stage III, papillary with follicular variant) my surgeon and I decided it was best to go with a TT. Before the surgery, I did ask the surgeon for a PT and he said " No way! I have been doing this surgery for many years now, and I have seen too many people who had PTs have to come back to have the other side removed." Well, at the time I was a little upset at his remarks, but as it turned out, I did indeed have a cancerous tumor in the other side ( unknown until final biopsy ) that would have had to be removed with a second surgery. In my case, I was fortunate that my surgeon " recommended" a TT over a PT. In spite of my experience, I will present the pros and cons of both. And as I said, hopefully, in a non-biased manner.
My information for this blog comes from an article that I read on the Thyca.org website. ( wonderful website- every thyroid cancer patient can benefit from frequent visits to this site) The article is titled: ATA Thyroid nodule/DTC guidelines, by Haugen ET AL. This is a long and rather complex article, but with time and a little patience, I think it is worth the read.
I think that a lot of us, including myself, have had a biopsy or two that came back as inconclusive ( the article refers to this as being a nodule that is " cytologically indeterminate ". ) There are two recommendations for this situation. One suggested recommendation would be a PT. Another recommendation would be the TT. The reasons given for the TT are that the nodule looked suspicious upon further analysis, the nodule looked suspicious when an ultrasound was performed, the nodule was large ( here the author defined this as greater than 4 centimeters) , the BRAF gene was present, there was a family history of thyroid cancer, or the patient had a history of radiation exposure. I really had not heard of the BRAF gene until recently. For those of you who, like me, were not familiar with this gene here is a simple definition: the BRAF gene, when mutated, can cause normal cells to become cancerous. This gene is most common in melanoma, but can also play a role in other types of cancer.
When there are more than one nodule, every nodule ( this study recommends biopsy on nodules 1 centimeter or greater ) should be biopsied. The risk of cancer is the same as with patients who have only one nodule. The follow up with patients with multiple nodules can be: 1) wait and see- repeat FNA as prescribed by the physician 2) PT or 3) TT.
The risks of doing a PT are fairly obvious. There may be malignancy in the other lobe that has not been detected or presents with a false negative after FNA. If there is a malignancy in the other lobe, then the patient will have to undergo a second surgery. There could also be spread of the thyroid cancer if cancerous nodes are not detected and removed.
Now for the pros. Having a PT, when appropriate, has less impact on the voice ( vocal cord damage). Also, the remaining thyroid lobe may produce enough thyroid hormone that supplementing with thyroid hormone will not be necessary. When having a PT, there is less chance that the parathyroid glands will be damaged. ( there are four parathyroids; they are near proximity to the thyroid and while do not participate in thyroid hormone production, produce parathyroid hormone (PTH) which regulates the amounts of calcium, phosphorus, and magnesium in bones and blood. A person can get by with only one parathyroid, but may need calcium supplementation. If all four are removed, a person will need calcium supplementation for life.)
After a TT, thyroid hormone replacement is mandatory. A patient cannot survive without hormone therapy. This means frequent trips to get blood work done so that TSH, free T4, T3 and other blood values remain in the correct range. I think that people who have not had to have their thyroid removed or those that are hypothyroid for other reasons, do not realize that it is not a " one and done" kind of thing. There are changes in the body (ex: weight changes, dietary changes, other medications added) as well as how one takes their medication, drug manufacturer practices - potency and consistency in strength and dosage of the thyroid hormone drugs. Many factors contribute to the necessity of consistent blood work so that thyroid patient's bodies are working correctly and the patients are feeling well. It is also very important that before a TT, a patient needs to be sure that the surgeon has experience in doing this surgery. As stated above, it is extremely important to keep as many parathyroids as possible. To explain why a skilled surgeon is vital, the parathyroid gland is the size of a grain of rice! It is also important for the surgeon to take care with the vocal cords, which are in close proximity to the thyroid gland.
For the pros of having a TT: well, the cancerous nodules are gone, unless they have spread into the lymph nodes or vascular tissues. A patient may decide, along with their physician, that a TT will prevent a possible second surgery. One can not discount peace of mind, when TT is appropriate.
In conclusion, having a PT versus a TT should be based on tests ( FNA, ultrasounds, etc) recommendations from a patient's endocrinologist, physician and/or surgeon, and most importantly, what a patient prefers and feels is right for them. This is a personal decision and there is no one choice that is right for everyone.
No comments:
Post a Comment