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Doctor insights on: What Is The Difference Between Lung Nodule And Lung Fibrosis

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What is the difference between lung nodule and lung fibrosis?

What is the difference between lung nodule and lung fibrosis?

Differentterminology: Nodule is growth which could be benign or malignant. Fibrosis is hardening of lung tissue. ...Read more

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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What is the difference between lung nodule on pleural surface vs subpleural?

What is the difference between lung nodule on pleural surface vs subpleural?

Pleural/subpleural: A pleura is a serous membrane which folds back onto itself to form a two-layered membrane structure. The thin space between the two pleural layers is known as the pleural cavity and normally contains a small amount of pleural fluid. The outer pleura (parietal pleura) is attached to the chest wall. The inner pleura (visceral pleura) covers the lungs and adjoining structures. The subpleura is below it ...Read more

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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. ...Read more

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Can there be a difference in a CT and pet scan of 1mm in the results of a lung nodule?

Can there be a difference in a CT and pet scan of 1mm in the results of a lung nodule?

Yes: There are differences in techniques between the ct scan with a pet scan and a general ct scan. Additionally, radiologists may measure a nodule slightly differently.

Please look at a ruler and realize just how small 1 mm is. Radiologists routinely are measuring things less than 1 cm or about 3/8 of an inch. ...Read more

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Does mild lung fibrosis get worse gradually?

Does mild lung fibrosis get worse gradually?

Usually: Usually the fibrosis gets worse (unless it was from a scar due to a previous infection) but it would also be dependent on the cause for the fibrosis. Talk to your doctor about it. ...Read more

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Pulmonary pressure of 27 at the age of 28 I am scared. Am I going to die of lung fibrosis? Doctor concerned and repeating in a year

Pulmonary pressure of 27 at the age of 28 I am scared. Am I going to die of lung fibrosis? Doctor concerned and repeating in a year

Normal: Pulmonary pressure of 27 mmHg in a 28 yo otherwise healthy woman is NORMAL and requires no further follow up. If you are still worried, look for a third opinion (since this one is the second) ...Read more

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My father is 61 years old and is diagnosed with pulmonary lung fibrosis. What is the ideal diet for such condition?

My father is 61 years old and is diagnosed with pulmonary lung fibrosis. What is the ideal diet for such condition?

Healthy weight: With pulmonary fibrosis the lungs are stiff which means it is hard to get them moving. So the key as far as diet goes is to minimize the amound of weight that he has to move with his chest. ...Read more

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High scl70, joint pain, fatigue, palmar erythema, telangiectasias, lung fibrosis, livedo reticularis, no hard skin! Can it be Scleroderma if no hard skin?

High scl70, joint pain, fatigue, palmar erythema, telangiectasias, lung fibrosis, livedo reticularis, no hard skin! Can it be Scleroderma if no hard skin?

Rheumatologist: The answer would be yes. These symptoms and signs are consistent with an autoimmune/connective tissue disorder. A rheumatologist is best qualified to evaluate and treat you after ordering appropriate tests. ...Read more

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Will a lung nodule have grown since august 7 until today surgeon a said it will have surgeon b said no. It hadn't grown since may?

Will a lung nodule have grown since august 7 until today surgeon a said it will have surgeon b said no. It hadn't grown since may?

See below: Blondie, you are going crazy with this! My suggestion, out of my experience, is that you have to find one doctor that you like and trust and go exclusively by what he/she advises you. Seeking multiple opinions is only going to confuse you to no end, and you will not get a medical education out of healthtap. Again, good luck, and get the thing out to achieve some piece of mind! ...Read more

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In 72'-74', I was on a U.S Navy ship, which was full of asbestos. In 05', I was diagnosed with that left lung nodule. May this have caused my nodule?

In 72'-74', I was on a U.S Navy ship, which was full of asbestos. In 05', I was diagnosed with that left lung nodule. May this have caused my nodule?

You're still alive: If the nodule was found ten years ago, and you had no illness as a result, then this is not cancer. If it were cancer, you might have a pretty good case. I'm glad it's not. Asbestosis itself presents as diffuse thickening of the lung texture, or of the pleural surfaces. Most lung nodules in non-smokers (hope that's you) are old histoplasmosis, which is harmless. Thanks for your service. ...Read more

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Back in 1972-74, I was on a U.S Navy shift aircraft carrier, which was full of asbestos. In 2005, I was diagnosed with that left lung nodule, which was removed in 2008. In your personal opinion, do you think that may have caused my lung nodule? If so, ple

Back in 1972-74, I was on a U.S Navy shift aircraft carrier, which was full of asbestos. In 2005, I was diagnosed with that left lung nodule, which was removed in 2008. In your personal opinion, do you think that may have caused my lung nodule? If so, ple

Many types of tumor: If a lung lesion was noted as solitary and no previous history of underlying disease with bx of mesothelioma then Asbestos has been associated with such lung lesions. Squamous Ca usually derived from smoking and adenoCa from a viral source. At this time worth while to get PET/CAT to assure all path absent from lung or metastatic foci. ...Read more

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What do you recommend if I have a 13 mm lung nodule, is that big?

What do you recommend if I have a 13 mm lung nodule, is that big?

Big enough: A 13 mm lung nodule warrants a pet/ct scan. This will identify things like calcifications seen in benign nodules and will determine if sugar uptake is high as seen in infection or tumor or low indicating scar. Depending on the likelihood of cancer, a ct guided biopsy is possible in most peripheral nodules greater than 9mm. Lung cancer is increasing in nonsmokers, women and the young in u. S. ...Read more

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Is this a good sign, round lung nodule 1.4 2.7 hasn't grown since feb?

Is this a good sign, round lung nodule 1.4 2.7 hasn't grown since feb?

Good sign: A nodule that hasn't grown over that period of time is unlikely to be a cancer. ...Read more

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If someone smoked 30 years ago and now has a lung nodule should it be removed asap?

If someone smoked 30 years ago and now has a lung nodule should it be removed asap?

See below: Please refer to our previous exchange and just go ahead and have it removed for your piece of mind, and if it turns out to be cancer, it may be curative as well. ...Read more

Dr. Paul Velt Dr. Velt
3 doctors agreed:
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Do you believe that absestos can cause a lung nodule?

Dr. Paul Velt Dr. Velt
3 doctors agreed:
Do you believe that absestos can cause a lung nodule?

Yes: Is the short answer. Asbestos can cause several different changes to the chest and lung fields. Pulmonary nodules are just one example. Pleural disease including plaques and calcification as well as mesothelioma are side affects of asbestos. Lung cancer is also a problem. Don't ignore this nodule. Talk to your doctor. ...Read more

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Saw a show on tv and they mentioned something called lung nodule. What is that?

Saw a show on tv and they mentioned something called lung nodule. What is that?

Also used to be: Called a coin lesion. A solitary pulmonary nodule may be a primary cancer, or a granuloma or other benign things like a hamartoma or interlobar node. It also may the cause of "false positives" on ct-chest screening. Multiple nodules draw suspicion to traveled tumors. When very small (<5 mm), can be watched for growth; if larger, further work up including removal. ...Read more

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Lung nodule grew 6mm, could I have cancer?

Lung nodule grew 6mm, could I have cancer?

50%: A non calcified lung nodule has a 50%risk of being cancer. Diagnosis of cancer is made by pathologist on a microscopic slide of a significant biopsy size. Removal of the whole nodule provides the pathologist with adecuate specimen. Needle biopsy of a lung cancer will miss the diagnosis half the time. So if it is cancer by needle bx it is. Otherwise undiagnostic. ...Read more

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Will a 6mm lung nodule show up on a pet scan?

Will a 6mm lung nodule show up on a pet scan?

Maybe: Lung nodules smaller than 10 mm (3/8 inch) can be falsely negative on pet because of limitations of the technology. That means the uptake on the scan is not high enough to be suspicious even though the nodule is actually worrisome. However, some small nodules have enough uptake despite their small size. The pet is not a bad idea for a 6 mm nodule, and if positive, means aggressive evaluation. ...Read more

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Can a biopsy be taken of a calcified lung nodule?

Can a biopsy be taken of a calcified lung nodule?

Yes, but: Calcification of a lung nodule frequently indicates that it is benign in nature. It is the noncalcified nodules that are most concerning for lung cancer. And thus the noncalcified nodules that more frequently meet criteria that prompts biopsy of the nodule. Appropriate treatment of lung nodules is best done at facilities with experience ...Read more

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What are the odds that a lung nodule is cancer?

What are the odds that a lung nodule is cancer?

It depends: Not all lung nodules are alike. The odds that a nodule is cancer depends in the appearance and size of the nodule, the medical history of the patient, the smoking history of the patient, and how the nodule changes over time. Radiologists, pulmonary physicians and thoracic surgeons are best qualified to determine the risk that a particular nodule is cancer. ...Read more

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Could aspirating a small piece of popcorn cause a lung nodule?

Yes: Inhalation of foreign bodies will initiate an inflammatory response from your immune system which can ultimately culminate in a calcified lung nodule on x-ray. ...Read more

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My father was diagnosed with lung nodule. Should I be worried for him?

My father was diagnosed with lung nodule. Should I be worried for him?

Needs investigation: Lung nodule needs to be investigated to ascertain the underlying pathology. It may a residua of an old infection, an easily treatable infection or lung cancer. Worrying would not address the issue. Your father should see an internist or a pulmonary specialist. ...Read more

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I was wondering what are the odds that a 2cmx3cm lung nodule is cancer?

I was wondering what are the odds that a 2cmx3cm lung nodule is cancer?

Tissue biopsy: At least 50% if non smoker over that if smoker. Need to perform excisional or incisional biopsy and cultures for the pathologist to determine what is it. ...Read more

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Can a radiologist tell if a lung nodule is benign by just looking at it?

Can a radiologist tell if a lung nodule is benign by just looking at it?

Often but not perfec: Often there are certain characteristics on the xray that are helpful but no guarantee. It is often helpful to obtain a pet/ct scan as it has more accuracy. The best test is a biopsy if possible. ...Read more

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How long can a person with a 1.4 lung nodule live with and without treatment?

How long can a person with a 1.4 lung nodule live with and without treatment?

Depends: Depends on what caused the lung nodule. Even among cancers, there are different types with different prognosis. If it is lung cancer and you don't treat it, generally you will die from it but your life expectancy may vary greatly depending on the type and spread - from months to 5+ years. If it has not spread and you take it out, you have a good chance of being cured. ...Read more

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I have a 2 CM calcified lung nodule as per my last x ray, should I be worried?

Depends: The pattern of calcification is important. Lamellar, popcorn, central, and diffuse homogenous calcification are usually benign. Anything else that size is very suspicious. ...Read more

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Truthful answer please, can an suv 2.7 be caused by an infection in a lung nodule?

Truthful answer please, can an suv 2.7 be caused by an infection in a lung nodule?

Yes: I know I have answered a number of your questions about this nodule and I hope you are well! Don't forget we are not really treating you. My best advice is to find a non-virtual doctor with whom you have good rapport, and decide together with that doctor what to do in real life. ...Read more

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What is a t.Surgeon waiting for when he suggests wait and see. Lung nodule 1.4 2.7 suv?

Watching for change: The suv is a measure of how metabolically active the nodule is. While there is some overlap between benign/ malignant nodules, a cutoff of suv 2.5 is used for nodules over 1 cm in size. Based on borderline suv and perhaps the ct appearance of the nodule the tests may not reliably tell if benign or not. Short term follow up can show if it grows. If it does grow, that becomes more worrisome. ...Read more

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What symptoms can a benign lung nodule cause, and whether it causes blockage and effect on breathing?

What symptoms can a benign lung nodule cause, and whether it causes blockage and effect on breathing?

Mostly none: In general, lung nodules benign and malignant are asymptomatic (without symptoms). That said, benign is more likely associated with infection. Thus symptoms such as infection and pneumonia may be present; fever, cough, etc.... Other symptomatic nodules may be from sarcoidosis. There is a large list of symptoms with sarcoid. ...Read more

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Last xray found 6mm lung nodule but it was not on an xray fromvthe mpnth before. Why so sudden? Ciuld it be a mistake?

Last xray found 6mm lung nodule but it was not on an xray fromvthe mpnth before. Why so sudden? Ciuld it be a mistake?

See below: Lung nodules are much harder to see on CXR, especially one so small. My guess is it was there, just not visible on CXR. ...Read more

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X-ray said lung nodule about 1.2 in feb, aug 1.4 2.7 suv, pet, oct 1.5ct. Has it grown or not? Could it be cancerous after 8 months?

X-ray said lung nodule about 1.2 in feb, aug 1.4 2.7 suv, pet, oct 1.5ct. Has it grown or not? Could it be cancerous after 8 months?

Yes and no: 1.2 to 1.5 cm is not a lot of change and it may be positional, but if real bear in mind that cxr and ct are 2-dimensional and the lung nodule is 3-dimensional so it may account to doubling in growth. Also see all my previous answers, blondie:). ...Read more

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If a lung nodule grows to 1cm and its cancerous and taken out. What are the chances of cure or survival? The internet says it is still low.

If a lung nodule grows to 1cm and its cancerous and taken out. What are the chances of cure or survival? The internet says it is still low.

See braking bad: Need to know pathology results: small cell cancer vs non-small cancer vs mets - all will cast different prognosis. See oncologist for stats. ...Read more

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28/f/smoke10 yrs, quit 4 yrs ago. 2mm sub plural lung nodule in periphery base. What are chances its cancer? Very scared. Have to wait 6 months.

28/f/smoke10 yrs, quit 4 yrs ago. 2mm sub plural lung nodule in periphery base. What are chances its cancer? Very scared. Have to wait 6 months.

Unlikely Cancer: At 28 years of age even for a heavy smoker a 2mm nodule would be unlikely to be cancer. The recommended follow up of a 2mm nodule should be 1 year, not 6 months, however, because it is so small growth will be almost impossible to determine. If you quit smoking at age 24 then your total number of pack years of smoking (total exposure) is low. It is highly unlikely that this is cancer. ...Read more

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Hi Dr. I am 34 years old male, non smoker I took chest radiograph before 2 weeks I found that I have lung nodule 6*6mm In my left lung, thanks?

CT follow-up: Get a CT scan if not done yet. Isolated lung nodule of 6.6 mm is too small to be detected by PET-CT, and also too small to biopsy at this time. Your risk for primary lung cancer is relatively low given your young age and nonsmoker status. But I suggest you to see a lung doctor for opinion and CT follow-up. In addition, what did your MRI abd show? ...Read more

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Recently discovered a 6mm lung nodule during ctshort history of smoking around 18-20 sociallyshould I be concerned as a high or low risk patient?

Low risk: Your smoking history is relatively short. A 6mm nodule would be observed for 3-6 months before repeating the scan. The overwhelming majority (>95%) of nodules seen on ct are benign. If you stopped smoking, congratulations. If not, strongly consider it. ...Read more

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Noncalcified 6mm upper lung nodule. Stayed that way for 3 years. 4th year it grew to 8.4mm. 5th year is 1.2cm. Could this be slow growing cancer?

Yes!!!: Lung nodules are checked every 6 months for 2 years. If they don't change in size, they are considered stable, and annual cxr is in order.
If it grows, it could be malignant. 6 mm to 1.2 cm is a lot of change, so see your primary care doctor for a pulmonary consultation. ...Read more

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What percentage is a 6mm lung nodule of being cancerous I’m 43 non smoker no drugs internet says 40 percent are cancerous just worried it could be?

What percentage is a 6mm lung nodule of being cancerous I’m 43 non smoker no drugs internet says 40 percent are cancerous just worried it could be?

If you: Are not at increased risk, and the nodule has benign CT features, then the chance of malignancy is less than 1-2%. This is from the ACR's Lung-RADS classification system. 40% is simply not correct. ...Read more

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I have a 4mm lung nodule on my right lung 2 on my left could it be cancer?

I have a 4mm lung nodule on my right lung 2 on my left could it be cancer?

Maybe....: ...maybe not. If they are all less than 5-6 mm, there is usually not a whole lot to do other than observation and follow up. PET scans are usually not too sensitive for very tiny nodules. I would defer, however, to the judgement of your physician who knows your situation better and can determine if there is anything else to do now. If you smoke, please stop. Best to you. ...Read more

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What is the lowest intake suv on a pet scan (lung nodule)?

What is the lowest intake suv on a pet scan (lung nodule)?

Zero: The lowest suv (standardized uptake value - a semiquantitative measure of metabolism) is zero.

The maximum suv in a region of interest is called suv max.

Generally, if the lung nodule is less than an suv max of 1, it is likely benign. However, there are plenty of non malignant diseases that can have increased FDG uptake, such as healing fungal lung infections, called granulomas. ...Read more

Nodule (Definition)

Any growth or deposit in the body or on its surface may be casually termed a nodule until its character is determined by the familiarity of the physician with it or by the results of a biopsy if it is not so obvious. The term is casual ...Read more


Dr. Loki Skylizard
306 Doctors shared insights

Lung Nodule (Definition)

A lung nodule is a round area that is more solid than normal lung tissue. It is a nonspecific finding and can ...Read more