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Doctor insights on: What Does Lung Cancer Look Like On A Catscan

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Do CT scans show if a person has lung cancer?

Do CT scans show if a person has lung cancer?

Yes: if CT revealed mass in lung for defenite diagnosis need biopsy,or if possible resection of tumor. ...Read more

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Dr. Barry Rosen
4,298 doctors shared insights

Cancer (Definition)

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


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How accurate is CT with contrast for lung cancer detection?

How accurate is CT with contrast for lung cancer detection?

See answer: Pulmonary ct is extremely sensitive in identifying lung nodules. When found, these nodules then need to be appropriately evaluated either with followup lung ct, pet-ct, or direct tissue sampling. Your clinical dr. Can best advise you – or you can be seen at a dedicated lung nodule center. ...Read more

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How accurate is a ct scan for lung cancer?

How accurate is a ct scan for lung cancer?

CT Chest: has a high sensitivity for detecting lung cancer, approximately 95%, so CT will detect the vast majority of lung cancers. ...Read more

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What is CT scan usual result for lung cancer?

What is CT scan usual result for lung cancer?

"Nodule": A solid mass or nodule however it is difficult to define benign vs malignant. Pet/ct may more helpful where there is suspicion. However, this may also limited in differentiating infection/ inflammation from cancer. That being said, imaging does not arrive at a pathological diagnosis. When possible, any suspicion of lung cancer requires pathological confirmation through a biopsy. ...Read more

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How accurate is a ct scan for lung cancer and espohagal cancer?

How accurate is a ct scan for lung cancer and espohagal cancer?

Depending: on the technical factors of the scan, highly sensitive for detecting lung cancer, less so so for esophageal cancers. Small esophageal cancers may be undetectable on CT, endoscopy is the best way to evaluate for that possibility(also biopsy can be performed at the time of endoscopy). ...Read more

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What is the definition or description of: pet-ct lung cancer diagnosis?

What is the definition or description of: pet-ct lung cancer diagnosis?

No such thing: Pet scan identifies increased cellular metabolism. The suv is a measure of how metabolically active a "spot" or "nodule" is. It does not diagnose. Lung cancer (all cancers) is diagnosed by obtaining tissue and examining by pathologist. Any lung nodule must be thoroughly investigated and closely followed by a comprehensive thoracic team. ...Read more

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If small cell lung cancer grows so quickly, why is the primary often difficult to visualise on CT with contrast? Is the primary slow growing? Thanks.

If small cell lung cancer grows so quickly, why is the primary often difficult to visualise on CT with contrast? Is the primary slow growing? Thanks.

Observation: It is not clear why small cell lung cancer can have larger secondaries than the primary lesion. But it is a common observation and metastatic lesions/secondaries may be the first manifestation of this cancer and the primary may be difficult to visualize. It is not due to the slow growth rate of the tumor. ...Read more

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I took the eatly cdt lung cancer test. They were all negative except the mage4. Ct was clear. Does this mean I have cancer elsewhere? Or it is to come

I took the eatly cdt lung cancer test. They were all negative except the mage4. Ct was clear. Does this mean I have cancer elsewhere? Or it is to come

Unclear: Not sure why test was performed. The data of this test/technology is still preliminary. Antibody biochemical assays may identify the presence of tumor/cancer years before they are large enough to find by radiology; therefore before we can actually treat. If used, results should be integrated into overall risk assessment, screening, surveillance. Test should not be routinely employed without a plan. ...Read more

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Can CT of chest with contrast rule out lung cancer?

Can CT of chest with contrast rule out lung cancer?

Not completely: If there is a suspicious density in the lung , definitive way to rule out if it is due to malignancy , or to detect its nature of it , is by biopsy only .And tissue examination ( pathological examination ). ...Read more

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Is it possible to get lung cancer from a spiral CT scan?

Is it possible to get lung cancer from a spiral CT scan?

Possible Not Likely: Medical radiation is estimated to cause about 1% of cancers. Patients trested with radiation therapy have about a 0.5% chance of having a radiation related 2nd cancer. The risk from a single spiral ct is considerably less and would likely occur 10-20 years after the exposure. Bottom line is that tests like ct scans should only be ordered for good reasons. ...Read more

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Is it feasible to have had small cell lung cancer causing malabsorption for 1 year but not show on CT scan.

Is it feasible to have had small cell  lung cancer causing malabsorption for 1 year but not show on CT scan.

No: Although a negative CT does not guarantee that you are totally free of cancer cells, your malabsorption has nothing to do with the cancer. If you have received radiation for the condition, then that Rx might potentially though unlikely lead to GI changes. ...Read more

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Is it true that the primary tumor in small cell lung cancer is often occult? Does this mean even a CT scan can't see it? Do we only detect on spread

At some point: in its development, every cancer is "occult" because it originates on a microscopic level. CT has a high sensitivity for detecting lung cancer, approximately 95%, so CT will detect the vast majority of lung cancers. ...Read more

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Imaging - is contrast enhanced ct useful for finding early small cell lung cancer? I understand low dose ct is not good for early sclc is this true?

Imaging - is contrast enhanced ct useful for finding early small cell lung cancer? I understand low dose ct is not good for early sclc is this true?

You need a good Doct: You are getting too deep into medical areas which are beyond your comprehension. You will benefit from seeing a medical doctor(Internist) who can counsel you and guide you further by educating you about your health concerns which appear to be way beyond reason. ...Read more

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Is a MRI better for lung cancer or a ct scan?

CT scan: is the study of choice. MRI is generally not useful in evaluating the lungs for nodules/masses, due to relatively longer scan times, the breathing motion of the lungs creates an artifact that limits visualization. ...Read more

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Can one chest CT scan damage lung and cause lung cancer ?

Can one chest CT scan damage lung and cause lung cancer ?

Not likely: The natural exposure one might get just from where you live may exceed 3msv per year. Living in denver, you might be exposed to 6msv per year. Risk of developing cancer from a properly conducted ct scan is low. I believe the estimated average radiation exposure for a single chest ct is about 5-7msv. A low dose chest ct is about 2msv. ...Read more

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When would you do a spiral CT scan to check for lung cancer?

When would you do a spiral CT scan to check for lung cancer?

High risk groups: It is recommended for two groups: 1- 55 to 74 yo with 30 pack year smoking, current smokers or quit in past 15 years. 2- 50 & older minimum 20 pack years and at least one additional risk factor. ...Read more

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How often should one have a spiral CT scan to check for lung cancer?

Depends: Ct-scan screening for lung cancer is appropriate for specific patients that meet certain criteria. See this link: http://www.Cancer.Net/publications-and-resources/what-know-ascos-guidelines/what-know-accp-and-asco-guideline-lung-cancer-screening/recommendations-lung-cancer-screening. ...Read more

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Are small nodes seen on lungs thru chest CT scan suggesting lung cancer or something else?

Are small nodes seen on lungs thru chest CT scan suggesting lung cancer or something else?

Not necessary: Are you referring as small lymph nodes or small nodules on the lung? There are other conditions beside cancer that can be presented with small nodes - including infections, inflammation, autoimmune process, etc. So, a good history, examination, blood work and serial imaging would be necessary to be done. Discuss with your md in detail. ...Read more

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Does testing positive on the early cdt lung cancer mage 4 suggests I have cancer? Ct was clear. All blood work ok

Does testing positive on the early cdt lung cancer mage 4 suggests I have cancer? Ct was clear. All blood work ok

Proof no...: The data of this test/technology is still preliminary. With the current data we have, the word "suggest" would be accurate. Antibody biochemical assays may identify the presence of tumor/cancer years before they are large enough to find by radiology; therefore before we can actually treat. If used, results should be integrated into overall risk assessment, screening, surveillance. ...Read more

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Is it feasible to have had an occult small cell lung cancer causing malabsorption for 1 year but not showing on CT scan ?

Very unlikely: First lung cancer causing malabsorption is very unlikely Second for this to last one year without progression is very unlikely in SMCLC. I think you need to have the dx reevaluated. Best wishes ...Read more

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Can small cell lung cancer cause malabsorption through zolinger Ellison syndrome. Would this be a presenting sign of sclc before it shows on ct scan?

Can small cell lung cancer cause malabsorption through zolinger Ellison syndrome. Would this be a presenting sign of sclc before it shows on ct scan?

Uncommon: Most Zollinger-Ellison / gastrinoma are from islet cell tumors of the foregut. Oat cell carcinoma can produce other paraneoplastic syndromes, famously the anti-nerve cell ones, before being visible on chest ray, but it announces itself fast enough. And what are you going to without a localized tumor? Take out both lungs? Look for some other cause for any suggestive symptoms. Good question Gill. ...Read more

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Does early stage smalcell lung cancer cause malabsorption? I have had malabsorption for over a year, but a CT scan was clear in Feb, but still worried

Does early stage smalcell lung cancer cause malabsorption? I have had malabsorption for over a year, but a CT scan was clear in Feb, but still worried

See below: Small cell cancer of the lung does not cause malabsorption. Had you had untreated small cell lung cancer for a year, you would likely have the tumor all over in your body. 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. 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. ...Read more

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Is it possible that CT scan shows no pleural masses while I have lung cancer and massive effusion?

Is it possible that CT scan shows no pleural masses while I have lung cancer and massive effusion?

Unusual but yes.: CT scans have limited resolution. They do NOT see everything. Usually large pleural effusions come from significant disease, but not always cancer. The only way to tell is to have the pleural effusion drained & sent for cytology & other testing (culture). The lab techs can spin down the fluid, isolate cells or bacteria that may be causing it. Talk to a pulmonologist or your primary doc. Good luck! ...Read more

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Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


Dr. David Cooke
852 doctors shared insights

Lung Cancer (Definition)

Cancer that forms in tissues of the lung, usually in the cells lining air passages. The two main types are small cell lung cancer and ...Read more