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LungRADS 2 - Airway Nodules

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Let's begin with the category two airway nodules.

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These are things that by recognize them as category two,

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we're considering them benign,

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and we'll look at them on the next annual screening exam.

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In the first group here, whether it's in the trachea,

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this large endotracheal nodule,

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which we can see here on the axial image,

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and here on the coronal image, it is adherent

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to the airway wall,

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but it contains numerous bubbles of air within it.

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That is typical of an endobronchial secretion.

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It's low density if you measure it,

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unit measurement on the soft tissue density windows,

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and it has am attenuation of under 21.

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So this is consistent with secretions,

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and you can make the same determination for smaller airways,

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such as this, a segmental branch

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where we see air within the endobronchial filling defect.

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So these are characteristic secretions in the large

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and more peripheral airways.

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That would be lung rats.

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Two come back in one year for annual screening.

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And when we have multiple tubular opacities in the small

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airways, here's an example of the left lower lobe,

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and we can see multiple dilated tubular branching

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structures, so multiple segmental and subsegmental airways.

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Of course, we're gonna look at the more central

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lobar bronchus to this area

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to make sure there's not an endobronchial mass

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or obstructing cancer.

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But when we see this just in the periphery of the lung,

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multiple tubular opacities also favors mucus plugging.

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So in other words, we tried to codify the things

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that you see on chest cts every day

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and put them into the nomenclature of the lung rat schema

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to be able to have consistent recommendations

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for calling these endobronchial nodules.

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No immediate action.

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Come back for annual screening in a year.

Report

Faculty

Ella A. Kazerooni, MD, MS

Professor of Radiology, Cardiothoracic Division

University of Michigan

Tags

Oncologic Imaging

Neoplastic

Lungs

Chest

CT