How often should PET scans be done for my aunt’s breast cancer?

Question

Hello doctor,

My aunt is 61 years old and has stage IV breast cancer with bone metastases. She is currently on Letrozole and receives monthly Denosumab injections. Her most recent PET scan showed stable disease, but she often feels fatigued and occasionally complains of back pain.

So my concerns are:

Her recent calcium level was 7.8 mg/dL. Should Denosumab be temporarily paused when calcium levels drop this low?
Also, how frequently should PET scans be repeated to safely monitor disease progression?
She has been experiencing a reduced appetite lately. Could this be a side effect of hormonal therapy, or is it more likely to indicate disease progression?
Finally, are there any safe supplements that could help improve her strength and energy levels?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com

I understand your concern.

I hope you and your aunt are doing well. I am truly sorry to hear that her cancer has spread to the bones.

I would like to explain a few important points regarding her treatment. Denosumab is usually given only when the calcium level is above 8.5 milligrams per deciliter and should be withheld if the level is lower.

If the calcium level drops below this, the Denosumab dose should be paused, and calcium and vitamin D supplements should be started to correct the deficiency.

Once calcium levels return to normal, Denosumab can be safely resumed, and localized palliative radiotherapy may be added to help relieve bone pain.

Regarding her loss of appetite, this is quite common and often seen with Letrozole and other hormonal therapies. These medications can also cause hot flashes, dryness, and mild irritation.

To improve her appetite and nutrition, we usually recommend a daily multivitamin, small and frequent meals rather than large meals, and a balanced diet rich in fresh fruits, vegetables, and protein.

Regarding PET (positron emission tomography) scan follow-up, we usually prefer repeating it every six months if the disease remains stable. This interval is sufficient unless new symptoms develop or existing symptoms worsen.

If her condition deteriorates, the PET scan may be repeated earlier, such as after three months or even sooner, depending on clinical need.

To help her stay strong and active, she should eat small, frequent meals, drink plenty of fluids, and take multivitamins along with calcium, vitamin D, and omega-3 supplements. If liver enzymes are normal, a liver support supplement may also be considered to improve energy and recovery.

Most importantly, emotional support is essential and can make a significant difference in her overall well-being. Spending time with her, offering encouragement, and helping her stay positive are very important.

The treatment plan includes palliative radiotherapy along with calcium, vitamin D, omega-3 supplements, and multivitamins, with a follow-up review planned after seven days.

I hope this information is helpful. Please feel free to follow up if you have any further questions.

Thank you.