8 doctors weighed in:

Had an MRI of a lung nodule that is non calcified ... Slow growing since 2001... 9mm... Radiologist made diagnoses of it being benign . How can he make such a diagnoses without truly knowing isn't a CT pet scan better to show or even a biopsy?

8 doctors weighed in
Dr. Liawaty Ho
Internal Medicine - Hematology & Oncology
4 doctors agree

In brief: D/w your MD

It looks like a benign tumor--over 11 years- it grows slowly and the size is only 9mm. If this were a cancer, the growth will be way more rapid than this is.
A pet scan has some degree of false negativity when the size is < 10mm. A biopsy is invasive and it's not easy to do when the size is small. Would recommend surveillance only, & quit smoking .If you smoke. (btw, ct scan is better than mri).

In brief: D/w your MD

It looks like a benign tumor--over 11 years- it grows slowly and the size is only 9mm. If this were a cancer, the growth will be way more rapid than this is.
A pet scan has some degree of false negativity when the size is < 10mm. A biopsy is invasive and it's not easy to do when the size is small. Would recommend surveillance only, & quit smoking .If you smoke. (btw, ct scan is better than mri).
Dr. Liawaty Ho
Dr. Liawaty Ho
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1 comment
Dr. Guido Davidzon
Definitely agree with your answer, though nodules that are smaller than 10 mm are too small to characterize metabolically with PET. The technology cannot resolve these, so we don't call them negative or positive.
Dr. Rada Ivanov
Internal Medicine - Pulmonary Critical Care
1 doctor agrees

In brief: See below

This may be an intrapulmonary lymph node and not a tumor at all.
Radiologist probably made diagnosis based on the fact that it is very small and relatively stable over 11 years. Growth is very difficult to gauge with spots of that size. At any rate, it is too small for a meaningful pet or a biopsy. A ct is always better than a MRI for lung problems. Good luck!

In brief: See below

This may be an intrapulmonary lymph node and not a tumor at all.
Radiologist probably made diagnosis based on the fact that it is very small and relatively stable over 11 years. Growth is very difficult to gauge with spots of that size. At any rate, it is too small for a meaningful pet or a biopsy. A ct is always better than a MRI for lung problems. Good luck!
Dr. Rada Ivanov
Dr. Rada Ivanov
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Dr. Douglas Arenberg
Internal Medicine - Pulmonary Critical Care
1 doctor agrees

In brief: None of the above

Kind of confusing story.
We don't usually do an MRI of the lung to get that answer. Was it a ct scan? There are only three ways we can prove a nodule is benign, each with its pluses and minuses. One is a clear radiographic appearance (calcium or fat within the nodule), two is to demonstrate the absence of growth over sufficient time, and three is take it out.

In brief: None of the above

Kind of confusing story.
We don't usually do an MRI of the lung to get that answer. Was it a ct scan? There are only three ways we can prove a nodule is benign, each with its pluses and minuses. One is a clear radiographic appearance (calcium or fat within the nodule), two is to demonstrate the absence of growth over sufficient time, and three is take it out.
Dr. Douglas Arenberg
Dr. Douglas Arenberg
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In brief: Choices

12 years with minimal change suggests benign may still calcify inflammatory- granulomas can change a bit also removal is always an option but we try to, weigh risk versus benefit.
Ct is good for regular followup. Pet can be positive with some inflammation, but a negative would be encouraging.

In brief: Choices

12 years with minimal change suggests benign may still calcify inflammatory- granulomas can change a bit also removal is always an option but we try to, weigh risk versus benefit.
Ct is good for regular followup. Pet can be positive with some inflammation, but a negative would be encouraging.
Dr. Creighton Wright
Dr. Creighton Wright
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Dr. Joseph Accurso
Radiology

In brief: Very slow growth

Perhaps the growth is so slow as to make malignancy unlikely.
Discuss the specifics with your doctor. It is always better to compare same modalities (ct with ct). Ct is better than MRI for evaluating the lungs because of quicker scan time. Pet/ct can be nondiagnostic at this size. Biopsy has its own risks and is harder at this size.

In brief: Very slow growth

Perhaps the growth is so slow as to make malignancy unlikely.
Discuss the specifics with your doctor. It is always better to compare same modalities (ct with ct). Ct is better than MRI for evaluating the lungs because of quicker scan time. Pet/ct can be nondiagnostic at this size. Biopsy has its own risks and is harder at this size.
Dr. Joseph Accurso
Dr. Joseph Accurso
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