It sounds like a PET scan showed a tumor and numerous nodules (small spots) lighting up in each lung — that's understandably a lot to process, and many MyLungCancerTeam members have been in similar situations.
A PET scan works by injecting a mildly radioactive sugar into the body. Cancer cells absorb this sugar quickly due Show Full Answer
It sounds like a PET scan showed a tumor and numerous nodules (small spots) lighting up in each lung — that's understandably a lot to process, and many MyLungCancerTeam members have been in similar situations.
A PET scan works by injecting a mildly radioactive sugar into the body. Cancer cells absorb this sugar quickly due to their fast growth, which causes them to "light up" as bright white or light-colored spots on the scan. When multiple areas light up, doctors use this information to help determine the stage of the cancer and plan the best treatment approach. Here's what typically happens next:
- Further imaging like a combined PET-CT scan may be ordered for more detail
- A biopsy may be recommended to confirm whether the lit-up areas are truly cancerous
- Staging will be determined, which guides treatment decisions
It's worth knowing that PET scans do have a small false-positive rate of around 6.5%, meaning occasionally non-cancerous inflammation can also light up. A biopsy can help confirm results.
Sharing these findings and concerns with your oncologist is the most important next step — they can walk through exactly what the results mean for your specific situation.
AI-generated responses are not a substitute for medical advice. These services are not intended to
diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.
PET Scans for Lung Cancer: How Accurate Are They?
May 29
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