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Doctor insights on: Ct Lung Nodules Appearance Of Granulomas

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On feb 2012 after CT lung scan a 2mm lung nodule was found. Do i need to retest? Can a 2mm lung nodule disappear and if yes how long does it takes?

On feb 2012 after CT lung scan a 2mm lung nodule was found. Do i need to retest? Can a 2mm lung nodule disappear and if yes how long does it takes?

Need a followup: 2mm is really below any diagnostic resolution of ct. In your age, it most likely represents a bening finding, rather than a lung cancer. You should have had a follow up scan 3-6 months to assure either resolution of the nodule or to determine if it got larger. These can easily disappear if inflammatory. ...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


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Severe chest pain, calcium screening showed chronic pulmonary hypertension& lung nodules. Had CT of chest 3mm & 8mm noncalcified granulomas.helpplease?

Severe chest pain, calcium screening showed chronic pulmonary hypertension& lung nodules. Had CT of chest 3mm & 8mm noncalcified granulomas.helpplease?

Lung nodules: many causes of lung granulomas. Histoplasmosis a fungus in the dirt is probably most common cause. Being around construction sites or bird handling are frequent causes especially around Ohio river. Connective tissue causes like sarcoidosis and wegeners can also cause. Working in dusty areas or around talc is known cause. With pulmonary hypertension you need to see a pulmonologist for definitive dx ...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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When my 6mm lung nodule was found on CT, slight "alvelitis" was found on the right upper lobe. What is alvelitis?

When my 6mm lung nodule was found on CT, slight "alvelitis" was found on the right upper lobe. What is alvelitis?

Alveolitis: This is inflammation of the Alveoli,...the pulmonary (lung) alveoli are the terminal ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, and which are both sites of gas exchange with the blood as well. ...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?

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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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. ...Read more

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(36 and smoker)What could 3 noncalcified lung nodules sizes 6mm- 4mm left lower lobe be? Found on ct, what would be next step to identify cause?

Many possibilities.: Noncalcified lung nodules are worrisome, especially if you are a smoker (as you have), & more so if you are a "heavy" smoker (based on number of packs per day, & no of yrs that you've smoked). A nodule could be scar tissue, or the effects of an infection or radiation; however, most worrisome, of course, is lung cancer. To identify cause, next step is usually bronchoscopy (scope to look) & biopsy. ...Read more

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Multiple bilateral lung nodules on ct. Why would doc choose pet/ct right away rather than following size with another CT in 3 months? (non smoker)

Depends on size: If nodules are less than 1 cm. F/u in 3-6 mo appropriate assuming no other medical issues. Need job history . And any symtoms that proveked the original ct. ...Read more

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2mm sublpureal lung nodule in periphery base.28/f 10yr smoker, quit 4 years ago. Found by accident on ct. Petrified its cancer. What are the chances?

2mm sublpureal lung nodule in periphery base.28/f 10yr smoker, quit 4 years ago. Found by accident on ct. Petrified its cancer. What are the chances?

Probably not cancer: Congratulations on stopping smoking! at your age, your risk of lung cancer will be low if you stay off cigarettes. A 2mm sub pleural nodule is likely benign. You should have another ct scan within 4 to 6 months to assure that it isn't growing. If it is not, you can safely put it out of your mind forever or just do one more ct scan one year later. If growing, have it removed to rule out cancer. ...Read more

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CT for K-stone in July found 6mm nonclassified lung nodule. 2nd K-Stone in Sept and 2nd CT. No mention of nodule. Can they disappear? Do I need 3rd CT

CT for K-stone in July found 6mm nonclassified lung nodule. 2nd K-Stone in Sept and 2nd CT. No mention of nodule. Can they disappear? Do I need 3rd CT

Yes, no: Yes nodules can disappear, butr make sure the radiologist was also reviewing CT for it, he may have been focusing on just the kidneys. With more kidney stones, you may want to check calcium levels and/or parathyroid hormone levels ...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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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) ...Read more

Dr. Sheila Smith
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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


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