Doctor insights on:
Ct Scan For Cancer Detection
A PET/CT scan (same day) can be very beneficial in pancreatic cancer detection situations. Can a PET/MRI be just as helpful in place of?
Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more
What is the sensitivity and npv of pancreas protocol ct scan in the detection of pancreatic cancer in the symptomatic patient?
Sometimes....: The ct that is done with a pet is primarily to improve the pet image by correcting the data the pet camera receives from the patient's body for differences in density (bones denser than muscles, then fat, then air (lung) density). Some scanners have better ct images. So, sometimes the ct makes an incidental diagnosis. However, the ct is not the same as a diagnostic ct with IV and oral contrast. ...Read more
It is not Cut& Dried: Excessive radiation can cause cancer.So all x-rays have this potential if you give a large enough dose by repeated testing. This is why we suspect ct scans can actually contribute to a few hundred new cases of cancer in the us each year. But where and who exactly got it, is not possible to point out. ...Read more
Blood supply: Cancers can either have more or less blood supply than the organs they are in. Without contrast the cancer and organ usually look similar in brightness. But when contrast is given the relative brightness level can become dramatically different based on the difference in blood supply and as a result the tumor is much easier to identify. ...Read more
I don't follow...: Don't you know why your doc ordered a scan??? You should. Scans are ordered for a million and one reasons including cancer so you can't assume you had the test because you have cancer. Ask your doc about it and please never get a test without knowing why. If that is not what you meant with your question, please restate it. Best to you. ...Read more
Stop worrying: The most intensive CT scan delivers 20 mSV and most deliver far less. An airline pilot gets an extra 3 mSV per year; this is of course cumulative as a cancer risk but nobody's shown increased cancer in pilots. Nuclear industry regs allow up to 100 mSV in 5 years and they have no increased cancer risk either. The non-measurable risk from CT scans is worth it when you may be seriously sick. ...Read more
Vascularity: The contrast makes blood vessels whiter to stand out. Most tumors are hypervascular, they have more blood vessels. This makes them easier to see with contrast. Some tumors are not hypervascular and can be seen because they are less white than the surrounding tissues. Otherwise an MRI may be required to see the tumor. ...Read more
Not necessarily: Sometimes the lesion maybe too small to tell on the initial scan. Follow your doctor's recommendation. Most likely you will need a follow-up scan in a few months to make sure the lesion is not changing. ...Read more
What are the chances of getting cancer from a CT scan with and without contrast in your early 20's if you are female?
Extremely low.: The amount of radiation a patient is exposed to with a single computerized tomography (ct) scan is way below the amount required to inflict the necessary dna damage to cause cancer. In fact, studies have proven that a pregnant woman may safely receive a single ct with no negative effects to the fetus (although efforts should still be made to minimize unnecessary exposure). ...Read more
Many kinds could.: The neck is an anatomically complicated region with many internal structures. A ct scan of the neck could show both primary and secondary cancers (tumors that started in the neck and tumors that have spread to the neck from other parts of the body). One primary neck cancer that might be seen on a neck scan is thyroid cancer. Lymphoma is another. Tongue / tonsil / larynx cancers also... ...Read more
Very slightly: All radiation slightly increases cancer risk. No one knows exactly how much but increased amounts of radiation cause increased risk. You don't say what type of CT scan. According to http://www. Xrayrisk. Com/calculator/calculator. Php a brain CT may cause cancer in 1 out of 8000 while abdominal CT can cause cancer in 1 in 2000. The information obtained is considered worth the risk. See comment: ...Read more
See below: All x-ray exposure increases your chances of developing cancer.For any test involving radiation exposure, the question is one of risk vs benefit. If there's a compelling reason/question that's prompting the scan then it's likely worth proceeding but no one should be getting scans without a good reason. If you are unclear on your doctor's thinking, ask. Then you can decide if you want the scan done. ...Read more
Can a cystoscopy see cancer that a CT scan cannot? I have to do a cystoscopy even though nothing showed in the CT scan.
When people are sick, why do drs always have to say they need to rule out cancer. That causes me to panic cause my dr wanted CT scan for imbalance.
It can be the cause: Cancer is a common disease, so when people have serious symptoms that are persistent, then there is always some concern that cancer can be the cause, so it has to be looked into and that requires imaging x-rays/scans particulalrly in deeper parts of the body like abdomen and head. ...Read more
Is CT scan is the major risk factor for cancer? Should I be worried if I had one CT scan at the age of 30yr? Will it cause cancer later in the life?
Not the biggest risk:
Risk of one scan increases your lifetime risk about 0.08%...Low energy scans now even less. Annual from age 25 onward is about 3.8% risk. Older ct's were 1300 mrem...Annual exposure just living is 300 or so...If you live some places it can be 500 or 600 (more rock...Etc.).
If it was needed, it likely helped more than hurt. If not needed, we teach to avoid unneeded radiation. ...Read more
If cancer was found on a CT scan how quickly would you be told? I am waiting on a letter for my results but if they found something would they call
Variable: There is no fixed protocol for notifying a patient. It would be entirely appropriate for you to call your primary care provider to share the results with you. Please keep in mind that the imaging study may not provide a definitive diagnosis and a biopsy may be needed for examination by a pathologist. ...Read more
I'm 23, male, had CT scan show a lesion of a few millimeters on bladder. No other symptoms. What are the odds this is cancer? What else could this be?
Need cystoscopy. ..: I assumed the reason for having CT was blood in urine or bacterial urinary tract infection. So, thus far, you need a direct look at the whole interior of the bladder to make sure this tiny lesion of few mm is a tumor or a false image (this is possible). For a 23-y-o man, a malignant lesion is not highm but still possible; I have seen a low-grade malignant tumor in a man as young as 18 yrs old. ...Read more
About 7-8 years ago I did a ct scan for my head I don't know why I feel it may cause cancer I know that's stupid but I can't stop thinking about that?
Obsessing: About something that we know is not logical MAY be part of Obsessive Compulsive Disorder if it is extreme. Consider speaking w/a mental health professional or a prudent spiritual leader or get a virtual consult on HealthTap. "The Boy who Couldn't Stop Washing" by Rappaport is an old but good book about this. Peace and good health. ...Read more
For past 2yrs, my lipase has fluctuated where it is slightly elevated (20 points over the ref range of 60). Had normal CT scan so dr just assumed this is my normal. But now it's 40 points over that ref range and I'm terrified of pan cancer! ?
Take it easy:
Your lipase levels are neither diagnostic of nor exclude pancreatic cancer. It is unlikely that you have either pancreatitis or pancreatic cancer. Why do you keep testing for lipase? Do you have any symptoms?
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more
Sometimes.: It depends on many factors, the size of the cancer, the organ it involves, technical factors with the study, etc. There are many variables. Remember each cancer starts as a single cell, so we can never completely exclude the diagnosis even when a ct is completely normal. Pet/ct can show cancers that are virtually impossible to see on ct, even with contrast. ...Read more
Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! The image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more