More than a week after chemotherapy. New tumor, receiving immunotherapy injections?
Stage III oral cancer (surgery completed, chemotherapy and radiation therapy finished) has shown a recurrence of cancer cells over a week after the end of chemotherapy.
The PET scan results indicate a new tumor located at the clavicle, which is metastatic (currently approximately 5.6 cm).
Due to involvement with the left arm bones and pelvis, surgery is not an option.
The doctor has recommended immunotherapy.
Could you please tell me, what is the likelihood of the immunotherapy being effective against the metastatic tumor? Is the inability to perform surgery a negative factor? Thank you.
Rou, 40~49 year old female. Ask Date: 2022/04/05
Dr. Hu Ziren reply Oncology
A short-term recurrence indicates that the cancer itself has a strong resistance to treatment, and therefore, the subsequent treatment outcomes are expected to be poorer.
The response rate to immunotherapy is approximately 15-20%, with a slower response that requires 3-4 months to determine its effectiveness.
If there is no distant metastasis, it is recommended to reassess the feasibility of surgery, and after surgery, proceed with subsequent systemic therapy.
Reply Date: 2022/04/05
More Info
Immunotherapy has emerged as a promising treatment option for various types of cancers, including oral cancer, especially in cases where traditional treatments such as surgery, chemotherapy, and radiation have been exhausted or are not viable. In your situation, where a new tumor has been identified after completing chemotherapy for stage III oral cancer, it is understandable to have concerns about the effectiveness of immunotherapy and the implications of not being able to undergo surgical intervention.
Firstly, it's important to understand what immunotherapy entails. Immunotherapy works by stimulating the body's immune system to recognize and attack cancer cells. This can be achieved through various mechanisms, including checkpoint inhibitors, monoclonal antibodies, and cancer vaccines. The effectiveness of immunotherapy can vary significantly among patients, and it is generally more effective in certain types of cancers and specific patient populations.
In the context of your case, where a new tumor has been detected in the clavicle region, it indicates that the cancer may have metastasized. The prognosis for metastatic disease can be challenging, and the treatment options may be limited. The recommendation for immunotherapy, often referred to as "immune checkpoint inhibitors," is based on the understanding that these therapies can sometimes provide a response even in advanced stages of cancer. However, the response rates for immunotherapy in metastatic oral cancer can be variable, typically ranging from 15% to 20%. This means that while some patients may experience significant benefits, others may not respond at all.
Regarding the timeline for seeing results from immunotherapy, it is crucial to note that responses can take time. Unlike chemotherapy, which may show effects relatively quickly, immunotherapy often requires several weeks to months to determine its effectiveness. Patients may need to undergo treatment for 3 to 4 months before a clear assessment can be made regarding the response to therapy.
The inability to perform surgery due to the location and extent of the metastasis does complicate the situation. Surgical intervention is often considered the most effective treatment for localized tumors, but in cases of metastasis, systemic therapies like chemotherapy and immunotherapy become more critical. While it may seem unfavorable not to have surgical options, immunotherapy can still provide a chance to control the disease and potentially improve survival outcomes.
In addition to immunotherapy, it is essential to consider other systemic treatments, such as targeted therapies or additional chemotherapy regimens, depending on the specific characteristics of the cancer and the patient's overall health. Engaging in a thorough discussion with your oncologist about the potential benefits and risks of immunotherapy, as well as exploring all available treatment options, is vital.
In summary, while immunotherapy may not guarantee a high response rate for metastatic oral cancer, it remains a valuable option worth considering. The decision to proceed with immunotherapy should be made collaboratively with your healthcare team, taking into account the specifics of your case, the potential side effects, and your overall treatment goals. It is crucial to remain hopeful and proactive in exploring all available avenues for treatment.
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