Descriptive — carries no verdict

What does “Apical pleural thickening” mean on a radiology report?

A thin cap of scar-like tissue at the very top of the lung lining — common, especially with age, and usually long-standing.

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General explanations of common wording, not advice about your own scan. Ask the doctor who ordered it what your results mean for you.

Why the radiologist wrote it that way

The apex is the top of each lung, up under the collarbone. The pleura is the thin lining around the lung. A small cap of thickening at the apex — sometimes called an "apical cap" — is a frequent sight on chest X-rays and CT scans, often due to old scarring. The radiologist notes it because it is visible and, if it is unchanged from earlier images, to record that it is the same as before.

Is this good or bad news?

A thin, smooth, similar-looking cap on both sides, or one that is unchanged from earlier scans, is generally regarded as a benign, age-related or old scarring change. Radiologists pay more attention when thickening is new, growing, lumpy, or noticeably one-sided, and in that case they will usually say so and suggest what to do next. The comparison with earlier images is often the deciding factor, so it helps if your doctor can get hold of any previous chest imaging.

What it does not mean

  • That you have an active lung disease.
  • That it is cancer. Most apical caps are scarring, and a concerning appearance would be described in different words.
  • That it explains a recent cough or breathlessness.

Where you will see it

Chest X-rayCT chest

Words in this phrase

One phrase is not the whole report

What this sentence means for you depends on everything else your report says. Radily reads the whole thing and explains it in plain English — and can talk you through it on video, so you are not reading medical language alone.

Other phrases on your report

This explains how a phrase is commonly used in radiology reports. It is not a diagnosis, not a reading of your scan, and not medical advice. Only your doctor can tell you what your own report means.