What is interstitial shadowing?

Interstitial shadowing is the thickening of tissues around airspaces and small airways. It can be fine or coarse and is mainly linear or streaked in appearance.

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In what type of diseases is it typically seen?

It is typical of fibrotic diseases. The x-ray was showing fibrosis.

What is nodular shadowing?

Nodular shadowing is denoted by multiple, discrete, small (<5mm) opacities throughout the lungs.

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What causes nodular shadowing?

It is caused by miliary TB or carcinomatosis, pneumoconiosis and sarcoidosis. The x-ray was showing nodules miliary metastases.

Honeycombing refers to the varying sized cysts in densely scarred lung tissue. It can be used to describe fibrotic change but is not specific to this