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LungRADS 4A - Airway Nodules

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Here's some examples of four.

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A airway nodules.

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Again, three examples here of baseline screens

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and then one that is new on an annual screen.

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Here's an endobronchial nodule in the distal

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left main bronchus.

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It's larger than the last example I showed you.

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It has acute angles with the edge of the airway.

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It does not contain low density or areas of air bubbles.

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Here's another one in a proximal segmental bronchus.

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Same imaging features no endo,

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bronchial air, not low density.

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And then this other example,

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a very small endobronchial nodule.

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Some people would say that's really not even a nodule.

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It's probably just air in the airway.

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It was called a negative screen,

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but you can see this subtle little thickening here compared

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to the other cartilage rings.

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I wouldn't expect anybody

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to call this one an abnormal airway,

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and I know in my interpretations I would not identify

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this little tiny nodular focus.

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I would consider just a cartilage ring

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or a little air of secretion.

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So the interpretation of baseline CT screen

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as a negative screen is completely reasonable.

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The patient comes back on their annual screen

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and we see this filling defect, the location of

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that really tiny, subtle abnormality.

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This is still a four airway nodule.

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It's in a subsegmental bronchus, so still lung rats four A.

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We're gonna call the patient back in three months

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to look at each one of these abnormalities.

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Again, this little one is only seen in retrospect at the

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location where we now see it,

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but we wanna make a check on these all at three months

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to make sure they go away.

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And if they don't, we're gonna do just like the last case,

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elevate those to lung branch four Bs

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and move them on to be seen

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by a pulmonary medicine physician with bronchoscopy

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as the next test.

Report

Faculty

Ella A. Kazerooni, MD, MS

Professor of Radiology, Cardiothoracic Division

University of Michigan

Tags

Oncologic Imaging

Neoplastic

Lungs

Chest

CT