Adrenal Findings on — Lung Cancer PET-CT

Not necessarily. Adrenal uptake is a finding that needs further assessment, not a confirmed diagnosis. Benign adrenal adenomas — non-cancerous growths common in the general population — can also show uptake on a PET-CT. Your oncologist will assess the full scan, consider the appearance of the finding, and may recommend additional imaging or a biopsy before concluding whether the uptake represents metastasis or a coincidental benign growth.

An adenoma is a benign, non-cancerous growth on the adrenal gland. They are common and carry no health risk on their own. During cancer staging, the concern is that they can occasionally show uptake on a PET-CT that looks similar to a metastasis. When an adenoma is confirmed, it does not affect the cancer treatment plan and is typically monitored rather than removed.

A washout CT uses an iodine-based contrast injection and images the adrenal at two time points — immediately and after a delay. Benign adenomas tend to shed contrast quickly; metastases tend to hold it longer. The result narrows the likelihood of what the finding represents without requiring a procedure. It cannot give a definitive answer when genuine doubt remains — that requires tissue — but often guides the decision about whether to proceed to biopsy.

When imaging cannot clearly separate a benign adenoma from a metastasis, biopsy is the only certain answer. This matters because the treatment for stage III lung cancer, which may include surgery, differs fundamentally from the treatment for stage IV. NCCN and ESMO guidance both recommend confirming a solitary distant finding with tissue before it drives the staging decision. The biopsy is typically CT-guided and does not require a general anaesthetic.

Yes. Adrenal TB is a recognised condition in India and can cause enlargement and uptake that resembles metastasis on PET-CT. Imaging alone cannot reliably separate them in every case. If there is clinical suspicion of TB — based on your history or the appearance of the scan — your team may arrange specific blood tests or recommend a biopsy to confirm the diagnosis before treating the finding as cancer.

If tissue confirms an adrenal metastasis, the disease is classified as stage IV and surgery on the lung is generally not the primary approach under NCCN and ESMO guidelines. The focus shifts to systemic treatment — targeted therapy, immunotherapy, or chemotherapy depending on your tumour's molecular profile. Your oncologist will explain what the confirmed stage means for your specific situation and what the treatment aims to achieve.