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Doctor insights on: Lung Nodules Found In Ct Scan

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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


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I was recently told that I have a small 5 mm lung nodule. Discovered by CT scan. I am not a smoker. Never have been. Should I be worried?

I was recently told that I have a small 5 mm lung nodule. Discovered by CT scan. I am not a smoker. Never have been. Should I be worried?

Fleischner criteria: Nodules are common, and tend to scare people. The following link has criteria often followed by radiology groups regarding your findings. Be cautious, but not worried. Best wishes. Http://www. Snm. Org/docs/pet_coe/off_the_wall/fleis. Pdf.

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Is a lung nodule which is 7cm in size not very big though described as benign by 1st CT scan with a 2nd CT in 6 mnths should I be concerned about 7cm?

Is a lung nodule which is 7cm in size not very big though described as benign by 1st CT scan with a 2nd CT in 6 mnths should I be concerned about 7cm?

Need to check: The report again. 7 cm or 7mm or 0.7 cm? If lesion really 7 cm, it needs work up now. If 7mm (same as 0.7cm) then 6 month follow up scan ok.

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Had a CT scan it showed a 7cm lung nodule it may be benign I'm going to have another CT scan in 6 months to see if it has grown I'm a little concerned?

Had a CT scan it showed a 7cm lung nodule it may be benign I'm going to have another CT scan in 6 months to see if it has grown I'm a little concerned?

Lung Nodules: Are very common and fortunately most of the time are benign. Many people actually have these and are unaware. There are certain characteristics of nodules such as size and appearance that may sometimes be more worrisome. Also, a history of cigarette smoking may be a cause for concern. 6 months is a standard screening period for lung nodules.

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Had ct scan found 6mm lung nodule radiologist says if non smoker no further follow up should I be concerned I'm a no smoker what is my best option?

Had ct scan found 6mm lung nodule radiologist says if non smoker no further follow up should I be concerned I'm a no smoker what is my best option?

Lung nodule: Lots of people have nodules, oftentimes called an "incidentaloma" found on imaging studies. Speak with your primary care doctor to determine if a follow up image is necessary. If you are concerned, a repeat image in 6-12 months can be done to evaluate for changes in the nodule.

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After waiting 3 months for 2nd CT scan after multiple lung nodules are found in smoker, what is the likelihood of it being cancer? Largest being 7.5m

After waiting 3 months for 2nd CT scan after multiple lung nodules are found in smoker, what is the likelihood of it being cancer? Largest being 7.5m

Possible: The 2nd CT should show if any of the lung nodules is increasing in size which would indicate possible cancer. otherwise multiple nodules thar are stable may suggest granulomatous inflammation (rounded collections of inflammatory cells)

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What's a difference between lung nodule and intrapulmonary nodule? What's smallest size in mm that can be detected on CT scan?

What's a difference between lung nodule and intrapulmonary nodule? What's smallest size in mm that can be detected on CT scan?

No difference: They are two terms for the same thing. The smallest size detectable depends on the type of CT scanner and the technical parameters of the scan. A high resolution, thin section scan could potentially detect lesions 1mm or so in size.

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My dad has a lung nodule that has been stable for 5 years. This year the CT scan showed it grew 1mm. Can CT measurements be wrong?

Yes, it is not exact: Growing lung nodules can be cancer. But the growth has to be real which means increase of more than 2-3 mm before we can get concerned. The cross sections on ct are rarely at the same level so there is one or 2 mm variation between serially done ct scans.

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Ct scan from 1 month ago showed my lung nodule grew 1 mm. Will a pet w/ CT tell me if its cancer?

Ct scan from 1 month ago showed my lung nodule grew 1 mm. Will a pet w/ CT tell me if its cancer?

PET scan: Tumors generally have a higher metabolic rate and a pet ct make use of this. Tumor usually lights up on a pet scan. If the tumor nodule is very small it will likely be missed on a pet scan.

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Dx of lung nodules. Ct scans of chest two years. Had chestxr CT scan of chest 2012 2013 CT scan of chest pulm wants another im afraid it causes cancer?

Dx of lung nodules. Ct scans of chest two years. Had chestxr CT scan of chest 2012 2013 CT scan of chest pulm wants another im afraid it causes cancer?

Radiation from CT: This issue should be discussed with your pulmonary doctor and radiologist. There is some risk associated with the radiation from multiple ct scans. However, that risk is likely small compared to the risk of a nodule identified in the lung, and may not outway the risks of ct, in the long run. There should be a plan with a reasoned approach that minimizes the risk of ct that you can agree with.

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Can a radiologist usually tell if a lung nodule is benign or cancerous by seeing it on a ct scan?

Can a radiologist usually tell if a lung nodule is benign or cancerous by seeing it on a ct scan?

To a certain level: There are a number of radiologic characteristics for lung nodules that provide either high or low suspicion for malignancy. However, for many lesions the patient will require a biopsy for definitive diagnosis. The pathological evaluation includes many biomarkers necessary to stratify treatment options.

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What bloodwork would be used in diagnosing pancoast tumor? I am waiting to have CT scan due to apex lung nodule.

Usually none: A pancoast tumor (name of radiologist who described it), is a tumor involving a specific site in the lung, but it does not give the specific type. Usually they are adenocarcinoma or squamous cell carcinoma, but you need a biopsy to prove this. Do you smoke? You are young for a lung cancer, even though you have thallasemia. Do not worry until a biopsy and ct have been performed.

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30 yo female, former light smoker 4-5 yrs. CT scan in 2013 with small lung nodule, but no follow up. Should I be worried? The doctor was unconcerned.

30 yo female, former light smoker 4-5 yrs. CT scan in 2013 with small lung nodule, but no follow up. Should I be worried? The doctor was unconcerned.

Lung Nodules: Depending on the size, there are specific criteria that have been developed called the "Fleicshner criteria" that will determine if any further testing or repeat CT scans need to be done. Discuss in further detail with your Doc to be safe, Best wishes.

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Can radiologist tell by looking at ct scan if a lung nodule is cancerous my is 6mm he does not think no follow up needed should I get a follow up scan?

Can radiologist tell by looking at ct scan if a lung nodule is cancerous my is 6mm he does not think no follow up needed should I get a follow up scan?

Incidentaloma: There is a low likelihood of malignancy in subcentimeter nodules. To some extent there are important distinguishing factors - the benign appearance of calcification appearance, whether it is smooth, lobulated or spiculated and your personal smoking history. It is possible that the radiologist was able to make that call on features that made it likely benign, such that there was no decision needed

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Just had ct scan found 6mm lung nodule doctor and radiologist not concerned about follow up scan what should I do? Just looking for second opinion

Just had ct scan found 6mm lung nodule doctor and radiologist not concerned about follow up scan what should I do? Just looking for second opinion

You have a choice: Lung nodules are considered benign if they contain calcium. So check if yours are calcified or not? If they are not calcified then a follow up CT scan may be justified provided you are a smoker. A second opinion may be useful if you are anxious about your present situation. Otherwise go see your doctor in 6 months. A chest X-ray may be another alternative to check the lung nodule for any fur growt

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Ct scan showed very small lung nodule. I've had 3 chest x-rays prior and nothing showed on them. What happens now? How to determine if it's cancer?

Ct scan showed very small lung nodule. I've had 3 chest x-rays prior and nothing showed on them. What happens now? How to determine if it's cancer?

Depends: If the nodule is very small, it would not be seen in a plain x-ray so the fact you had 3 prior negative ones does not mean much. You may have had it undetected for years. Depending on how big it is and your clinical situation, your doc may opt to follow up with another ct scan in 6-12 months, do a pet scan, or proceed with a biopsy. Good luck and if you are a smoker, quit today.

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My two year monitor for lung nodule be over in fall 2014. Will I need monitor after that with CT scan of chest. I am concerned about the radiation.

My two year monitor for lung nodule be over in fall 2014. Will I need monitor after that with CT scan of chest. I am concerned about the radiation.

Many factors...: Need to be looked at. Age, smoking, family and previous cancer history. Also characteristics of the mass. Radiation does have a risk. If your doctor agrees and you are low risk, then perhaps plain cxr is adequate yearly if there is no change and features are low risk. Discuss it in detail with your doctor, but don't ignore it. Stable nodules can and do change.

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In colon cancer person can a 0.5 CM lung nodule be a met? This was seen on a ct Scan.

In colon cancer person can a 0.5 CM lung nodule be a met? This was seen on a ct Scan.

Afraid so: Given the circumstances you described the lung nodule would be presumed to be a met unless proven otherwise. Does the person have liver mets? If yes, then the lung nodule is more likely to be met.

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Can a stable over 4 yrs lung nodule at 5mm grow to 1.6 mm in 12 months or be effected by a dental injected sedative the day before CT scan?

Lung Nodule: An injected dental sedative has no effect on a lung tumor. A stable nodule may be a tumor, or it could be a scar from a previous localized infection. Most malignant tumors will grow considerably in 4 years; doubling in size in 12 months, however, raises the question that it is either a tumor in a growth phase or a granuloma or other form of chronic infectious process that should be followed up.

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Dr. Milton Alvis Jr
1 Doctor shared a insight

Computed Tomography (Definition)

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. Michael Gabor
1,857 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