CT Scan Results: Calcium Deposits and Teflon Concerns After Surgery

Q: CT Scan Results: Calcium Deposits and Teflon Concerns After Surgery

Hello： 1. Generally, it is unlikely. 2. It depends on the actual imaging. 3. An MRI of the cervical spine should be performed to assess whether the symptoms are caused by cervical nerve compression. 4. Cerebral calcifications can be classified into phy

Computed Tomography (CT) scan of the brain?

Hello, doctor.
I underwent a decompression surgery for left-sided facial spasms at the end of 2016.
At that time, the physician informed me that the surgical method involved creating an opening in the left posterior part of the brain and using Teflon to separate the blood vessels and nerves that were compressing the facial nerve.
Recently, I have been experiencing stiffness and pain in my neck, as well as intermittent pain from the left posterior brain to the top of my head, which prompted me to visit the hospital.
The attending physician arranged for a neck X-ray and a non-contrast CT scan of the brain.
Currently, my neck still experiences stiffness and pain at times, but I no longer have headaches.
During today's follow-up visit, the doctor informed me that the X-ray and CT results were unremarkable but mentioned the term "calcification." After reflecting on this at home, I have some questions, so I am seeking your advice.
Below is the report I copied from my personal health record, but it seems that the cloud data is incomplete.
Imaging findings: CT of Head: The non-enhanced axial and reformatted images were obtained with a MDCT.
Calcified lesion in the left side and abutting the medulla oblongata.
The midline structures are not shifted.
The ventricles are symmetrical and not dilated.
The basal cistern is normal.
The cerebral sulci and Sylvian fissures are normal.
The subarachnoid spaces are clear.
Bone defect at the left suboccipital region.
The extracalvarial soft tissue revealed unremarkable.
The orbits and visible portions are...
My questions are:
1.
Could the Teflon placed in my brain interfere with the CT results?
2.
Is it possible that the location of the calcification mentioned in the report is related to the Teflon (also in the left posterior brain)?
3.
If the calcification is unrelated to the Teflon, what further treatments or examinations should be considered based on the report?
4.
What is calcification? Is it serious?
5.
Would an MRI provide clearer results? Would the Teflon interfere with the MRI?
I apologize for having many questions, and I appreciate your response amidst your busy schedule.
Thank you very much!

Mr. Lin, 40~49 year old female. Ask Date: 2020/05/27

Dr. Lai Zhaokang reply Neurosurgery

Hello: 1.
Generally, it is unlikely.
2.
It depends on the actual imaging.
3.
An MRI of the cervical spine should be performed to assess whether the symptoms are caused by cervical nerve compression.
4.
Cerebral calcifications can be classified into physiological and pathological types.
Physiological calcification is normal, while pathological calcification is due to calcium deposition, which can be seen in cerebrovascular diseases, insufficient blood supply, and brain tumors.
However, most calcifications are insignificant and do not require special treatment.
If there are concerns, follow-up in 3-6 months to check for any changes.
If there are no changes, there is no need for worry.
If they increase in size, further evaluation is necessary.
5.
For assessing cerebral hemorrhage calcifications, CT is more sensitive.
For examining other brain and spinal cord nerves, MRI is more appropriate.
Generally, it is not interfered with by ferromagnetic materials.
Best wishes.
// Neurosurgeon Dr.
Lai Chao-Kang

Reply Date: 2020/05/27

More Info

Dear Patient,
Thank you for your detailed inquiry regarding your recent CT scan results and the implications of the findings, particularly concerning the Teflon used during your previous surgery and the noted calcification.

1. Impact of Teflon on CT Results: Teflon (polytetrafluoroethylene) is a biocompatible material often used in surgical procedures, including neurosurgery, to separate nerves from surrounding tissues. It is generally radiolucent, meaning it does not show up on standard X-rays or CT scans. Therefore, it should not interfere with the interpretation of your CT results. The calcified lesion noted in your report is likely not related to the Teflon itself.

2. Calcification Location: The report mentions a calcified lesion on the left side, adjacent to the medulla oblongata. While Teflon is not typically associated with calcification, it is possible for calcifications to occur in the brain due to various reasons, including previous trauma, inflammation, or other pathological processes. The exact nature of the calcification would require further evaluation, potentially including a biopsy if deemed necessary.

3. Further Treatment or Examination: Since the report indicates that the midline structures are not shifted and that the ventricles are symmetrical, this suggests that there is no significant mass effect or acute pathology. However, the presence of a calcified lesion warrants further investigation. Your physician may recommend follow-up imaging, such as an MRI, to better characterize the lesion. MRI provides superior soft tissue contrast and can help differentiate between various types of lesions more effectively than CT.

4. Understanding Calcification: Calcification in the brain can occur for several reasons, including previous hemorrhages, infections, or as a result of chronic inflammation. It is not inherently severe, but the clinical significance depends on the context, including your medical history and any associated symptoms. Your healthcare provider will consider these factors when determining the next steps.

5. MRI and Teflon Interference: An MRI is indeed more sensitive for soft tissue evaluation and can provide clearer images of brain structures compared to CT. Teflon does not interfere with MRI scans, as it is non-magnetic. Therefore, an MRI can be a valuable tool in assessing the calcified lesion and any other potential abnormalities in the brain.

In conclusion, while the presence of calcification can be concerning, it is essential to interpret these findings in the context of your overall health and symptoms. I recommend discussing your concerns and the next steps with your healthcare provider, who can provide tailored advice based on your specific situation.

Thank you for your thoughtful questions, and I hope this information helps clarify your concerns. Please feel free to reach out if you have further questions or need additional information.

Best regards,
Doctor Q&A Teams

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