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Doctor insights on: What Does Lung Cancer Look Like On Ct Scan

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Dr. Manoj Reddy
Board Certified, Radiation Oncology
18 years in practice
213K people helped
1

1
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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Dr. Eric Weisman
Board Certified
30 years in practice
4M people helped
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Dr. Creighton Wright
1 doctor shared a insight

Computed Tomography (Definition)

Computed tomography is also known as CT scan. 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


Dr. Aasim Sehbai
Board Certified, Hematology and Oncology
18 years in practice
763K people helped
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Dr. Eric Weisman
Board Certified
30 years in practice
4M people helped
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Dr. Peter Dahlberg
Board Certified, General Surgery
25 years in practice
17K people helped
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3
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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Dr. Carlo Hatem
Board Certified, Pulmonary Critical Care
19 years in practice
4M people helped
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4
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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Dr. Eric Weisman
Board Certified
30 years in practice
4M people helped
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Dr. Loki Skylizard
Board Certified, Thoracic Surgery
14 years in practice
1M people helped
5

5
How often should one have a spiral CT scan to check for lung cancer?

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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Dr. Carlo Hatem
Board Certified, Pulmonary Critical Care
19 years in practice
4M people helped
6

6
Can you tell on a CT scan if it is lung cancer or something else? What reasons wouldn't a dr do a needle biopsy?

Can you tell on a CT scan if it is lung cancer or something else? What reasons wouldn't a dr do a needle biopsy?

Sometimes: Certain things appear on ct scan, have characteristics of an old scar. No biopsy is needed. Certain spots are too small, too far, too dangerous to reach with a needle. ...Read more

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Dr. Liawaty Ho
Board Certified, Hematology and Oncology
17 years in practice
13M people helped
7

7
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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Dr. Sewa Legha
Board Certified, Medical Oncology
44 years in practice
9M people helped
8

8
What are the chances of getting lung cancer from one chest CT scan? I had one chest CT scan month ago and i m worried about cancer risk.

What are the chances of getting lung cancer from one chest CT scan? I had one chest CT scan month ago and i m worried about cancer risk.

None!: You cannot get cancer from one routine ct scan. It takes more than dozens of ct scans over a life time, even then it is rare to have this problem. Otherwise we will be foolish doing ct scans on people in order to help them! ...Read more

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Dr. Loki Skylizard
Board Certified, Thoracic Surgery
14 years in practice
1M people helped
9

9
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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Dr. Barry Sheppard
Board Certified, Thoracic Surgery
28 years in practice
146K people helped
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10
Besides 30 pack year history, what are other reasons to recomend CT scan for lung cancer screening? Is this the most accurate predictor of risk?

Besides 30 pack year history, what are other reasons to recomend CT scan for lung cancer screening? Is this the most accurate predictor of risk?

Yes: Currently smoking history is best predictor of risk for smoking associated lung cancers, other known predictors are presence of COPD and prior personal history of lung cancer and significant exposure to aerosolized asbestos. Talk with your PCP if concerned, a case for screening can be made for individuals based on unique combinations of risk factors. ...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. Michael Korona
1,690 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more


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Dr. Eric Weisman
Board Certified,
30 years in practice
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