Can a sleep apnea workup detect early-stage lung cancer?

Question

Hello doctor,

My father is 60, and for years, he has had heavy snoring and daytime sleepiness. We kept telling him to get it checked, and finally, the GP sent him for a sleep apnea assessment. During that process, the respiratory doctor ordered some basic chest imaging before the actual sleep study, and that scan suddenly showed a lesion which no one was even looking for, and he had no symptoms either. Now he is going through early-stage lung cancer checks, and we are all confused how a simple snoring referral turned into this.

Can a sleep apnea workup in a 60-year-old accidentally find early-stage lung cancer?
Is this something that actually happens, where sleep apnea tests lead to scans that pick up cancer?
Does finding it like this mean it is usually early stage, and should CT be more routine in these cases?

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

I can understand how confusing and unexpected this must feel for all of you. Going in for something like snoring and sleepiness and then hearing about a lung lesion can be quite unsettling.

Yes, what you are describing can happen. During evaluation for sleep apnea, especially in older patients or when symptoms have been long-standing, doctors sometimes request chest imaging to look at the lungs and airway structure before or along with the sleep study. These scans are not primarily meant to look for cancer, but because they give a clear picture of the lungs, they can sometimes pick up findings that were not suspected.

In many cases, early lung cancers do not cause symptoms, which is why they remain undetected until they are found incidentally, like this. So, although it feels accidental, this kind of detection often works in the patient’s favor because the disease is picked up at an earlier stage.

Finding it in this way does increase the chance that it is an early stage and more manageable, though final staging depends on further evaluation. I have seen a few patients where something unrelated led to imaging, and that helped in catching the disease early with better outcomes.

As for doing CT routinely in all sleep apnea evaluations, that is not generally recommended. These scans are used selectively based on clinical judgment, rather than as a standard step for everyone.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.