Doctor insights on:
What Does Hypometabolic Mean On A Pet Scan
Takes up tracer: Pet scans work by imaging a tracer that is a sugar analogue. Since tissue/cells that are more "metabolically active" take up more glucose tracer, we refer to that as "hypermetabolic". Diagnostically, this can mean a number of things and depends on the context. Inflammatory cells and malignant cells (cancer) are typically hypermetabolic. One would have to look at the context and medical history. ...Read more
Pet scans most often use a radioactive form of glucose, the energy source for most of the cells in our bodies. The pet scanner can detect and measure how much of the radioactive glucose analog, f-18 fdg, is in a particular organ or region. The areas using more glucose are hyper metabolic and generally more worrisome. Our brains and sometimes hearts prefer glucose as food, making ...Read more
Discuss with doctor.: It is best to discuss your pet scan results with your physician so that you can be sure that you have a detailed and correct understanding of the scenario. If you have any specific questions, be sure to have them clarified. Without the results, it is difficult to answer your question. Hope this helps. ...Read more
Usually necrosis: PET scan uses F18 FDG (a glucose metabolite) to localize active metabolic processes such as tumors. The uptake of the radiopharmaceutical is considered hot when increased over normal tissues or background Sometimes central portion of tumor is photogenic or cold reflecting necrosis or death of some of tumor. Necrosis can be related to chemotherapy or on presentation when tumor outgrows blood supply ...Read more
When a pet scan report says "no other evidence of metastatic disease." does that mean there was evidence of it somewhere in the body, but nowhere else?
Metastatic disease: Pet scans are imaging studies that look for subtle signs of increase metabolism in the body. Cancer cells have an increased metabolism compared to regular cells. If there are no spots of increased metabolism beyond where the cancer started then there are no signs of metastatic disease. ...Read more
Several Things: A positive pet scan does not always equate with malignancy. The positive scan reflects increased metabolic activity. Causes of false positive exams include infectious diseases (mycobacterial (like tb), fungal, bacterial infection), sarcoidosis, radiation pneumonitis and post-operative surgical conditions have shown intense uptake on pet scan. Good luck! ...Read more
No: SUV has no bearing on the aggressiveness of the cancer. It is a relative measure of the glucose metabolism. In fact, some very aggressive tumors have no FDG uptake at all. Some benign conditions like infection can have high uptake. The standard uptake value depends on many factors like patient body size and serum glucose level and the normal uptake in the tissue surrounding the target lesion. ...Read more
Not long ago I had a pet scan done, one lympnode lit up, it was light. I want to know if that still means cancer.?
Possibly: The purpose of a PET scan is to evaluate the extent of a cancerous process and see if before treatment there are several sites to be concerned about. After treatment to see if there is residual disease that may not have responded properly. If a node lights up it may suggest that there is still remaining disease. ...Read more
Is it better that the SUV Max on a pet scan is lower than higher? Does this mean the cancer Is less aggressive and less active What is the highest it can be!
What does a cancer free pet scan show? When a pet scan shows that a person is cancer free, does that really mean they're done with cancer? Is it cured? Are there any general statistics for a person who had cancer, but a pet scan later showed that the canc
PET: Pet scans are used for diagnosis, staging, and restaging of certain kinds of cancers such as lung, colorectal, esophageal, and head and neck cancers, and for monitoring response to therapy in breast cancer. Different kinds of cancers behave differently, and there is no guarantee that a given cancer is completely "cured, " even following complete remission. In general, evidence of a complete remission on a pet scan is a very favorable prognostic sign, and indicates that treatment was successful. Followup pet scans are still performed at regular intervals, often for the patient's lifetime, in order to monitor for any possible recurrence that might require new treatment. In general, if follow-up pet scans continue to show no evidence of disease over a period of many years, the likelihood of recurrence is low. ...Read more
PET scan said: On FDG images, there is diffuse FDG uptake throughout the left ventricle wall including the septum. What does that mean?
Need more informatio: You need to give us your medical history and explain the reason for doing a PET scan? Did you have chest pain or suspicion of heart disease? . What did your doctor tell you about the meaning of your PET scan report? FDG uptake is normal for the heart....lack of it might indicate a scar or damage to the heart muscle...but you do not seem to have that problem. ...Read more
Please can you explain what this means: Pet scan showed right lower lobe lesion with increased uptake SUVMAX20. Measuring 5x5cm &the right cervical ad?
PET Scan...: This PET scan is saying there is a lesion measuring 5x5 centimeters that is active physiologically-that is, it is using the isotope given during the scan. The lesion is located in the right lung, near the bottom. There are also some enlarged lymph nodes. This needs to be followed up closely because, although it may be benign, malignancy needs to be ruled out. A biopsy is likely the next step. ...Read more
PET scan: Pet scans are often used to look for metastatic disease and a clear scan means no obvious disease noted, a good sign but does not always guarantee one is disease free. ...Read more
I recently had a Pet Scan. The report indicated my right lung has an hypermetobolic with SUV max 3.0. What doses this mean?
Need investigation: Fast growing (and dividing) cells are designated as hyper metabolic areas in PET scan reading, tumors are also fast dividing fast growing tissue. Speak to your doctor will do further tests and will make sure is not a tumor. Take an appointment with out delay for follow up care. ...Read more
Post op seminoma, in r testicle. Pet scan done for suspecious nodes. Pet scan result shows negative for any abnormalility. This means no seminoma?
Surveillance: A negative pet scan means there is no accumulation of cancer cells large enough to be discernible by the pet scanner. There is a resolution limit of about 7mm in size to be seen, some are better now. I am not trying to scare you, but your doctor I'm sure will continue to caution you and continue surveillance for a period of time safe to say you are cancer-free. ...Read more
Any radiologist know why PET scans are not approved by medicare for evaluation of SCLC but is for NSCLC. Does it mean they don't visualize sclc well?
No effect on treatme: PET scan has no role in diagnosis of SCLC (or NSCLC, for that matter). Any lung cancer has to be diagnosed by biopsy. SCLC is of 2 types: limited (in 1 lung) or diffuse. The prognosis & treatment for these two types are different. The reason why Medicare does not approve PET scan is that treatment does NOT depend on what a PET scan shows. Since it PET doesn't change anything, they won't pay for it ...Read more
PET scan said for sarcoidosis: On FDG images, there is diffuse FDG uptake throughout the left ventricle wall including the septum. What does that mean?
Ask your doc...: FDG-enhanced PET/CT is to show the unusual increase or decrease in glucose metabolism at certain areas of the body especially inside a mass - before or after drug treatment. Based on the features and distribution of FDG imaging enhancement as defined from experience, a diagnosis can be drawn; of course, biopsy is ultimate means for confirmation. So, ask doc - treating or radiologist timely. ...Read more
My nurse practioner says the valve that let's blood flow to my body is letting my blood flow too much. She is reading off a pet scan. What does this mean? I also have an anurism 4.8. Could this cause tro
I have some lesions on my sclerotic lesions involving the t10, t12, L2 and L4 vertebral bodies, they are 8 mm what does this pet scan mean?
PET: Do you have any history of cancer? Did the lesions have any FDG uptake on pet? Lesions that size may be below the resolution of pet imaging. It is hard to know without having your history and seeing the images. Fdg is a nonspecific tracer and can be taken up in tumor, infection, and inflammation. ...Read more
Does metabolism of the brain mean cancer somewhere in your body? Dr. Said pet scan to be done to look for cancer due to brain metabolism. Confused!
Your lymph nodes are "factories" for your immune system to produce a variety of substances and cells for fighting off infection. They can enlarge with even a cold. The swollen "glands" in the neck when you have strep throat are really lymph nodes.
So, mildly enlarged nodes, especially if they have no or little FDG uptake on a pet/ct scan, are likely benign. Please see your health care provider. ...Read more
Could you tell me what it means if my husband was diagnosed with hpv16 tongue cancer and his pet scan also showed lymph nodes?
Consult: It would seem to me the logical thing would be for you and your husband to have a sit down, one on one consult with the physician treating you in order to answer all your questions (rather that posting this question on the internet with doctors who you don't know and who are not actually treating your husband. I know if I were the patient or spouse, that is what I would do. ...Read more
Brain pet scan no metabolic activity means no cancer of brain or no cancer anywhere in my body? Does this also mean no inflammation, hypometabolism?
Unclear: Pet scans of the brain can miss tumors, so a negative one doesn't necessarily mean you are in the clear. A study limited to the brain would not rule out other problems elsewhere. ...Read more
What can this mean... Indeterminate uptake in the medistinial/ hilar nodes in a colon cancer pt? This was noted from a pet scan. Can it mean mets?
Indeterminate: Metastatic cancer causes increased metabolic activity in lymph nodes. Inflammation and othe conditions can also do that, but not as much. Indeterminate uptake means that the uptake is more than normal, but not so high as to make cancer virtually certain. The uptake is in the range where it could be cancer, but is more likely non-cancer. Hence, indeterminate. ...Read more
Since pet scan shows only one area of lung which is very suspicious for malignancy, does that mean if it's cancer that it hasn't metastasis? Thank you
Does hypermetabolism in the upper right mass of the lung mean cancer? A PET scan was performed on the person
Doesn't sound good: Hi. Going solely on what you've told us, it doesn't sound good. The doctor (s) involved in the patient's care WILL explain the result. Good luck to the patient! ...Read more
Hi, if pet scan results for pancreatic cancer are negative after treatment is this mean that the patient was recovered completely?
No: The medical definition of a cure is usually no cancer present for 5 years after the end of treatment. PET scans can miss small tumors and can also give a falsely negative results for other reasons. That being said, it is a positive sign, better chance of a cure than if cancer were still present, obviously. ...Read more
What does it mean if a lymph node biopsy comes back as non diagnostic? Pet scan showed slight activity in abdominal lymph node & liver.
Biopsy negative: Doesn't explain your problem. Sit down with your doctor and get an explanation. ...Read more
Mri reveled mass in ribs/thoracic. Dr ordered pet scan and blood work. Why not biopsy first? Does this mean cancer is definite?
Mass: Au contraire, your doctor is trying to save you from an invasive procedure and determine if the biopsy is necessary. The other tests are necessary before proceeeding, follow their advice. ...Read more
My husband has a melanoma on the right side of his stomach. Blood work, X-ray and pet scan are normal. Does that mean it is not nessery for a node biopsy?
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