If insurance won't cover pet scan are there other good options to see how far cancer has spread? we know it is stage 4 nsclc adenocarcinoma.

If there: Is already information that the stage is four, then the pet won't add much. You have enough information to start a treatment plan.

Yes : There are multiple ways to evaluate for metastatic cancer, but pet scans are often the easiest and one of the best. Often an initial refusal for insurance to cover is because of a clerical or administrative mistake ( an incorrect diagnostic code on the teat request) and a call from the physicians office to the insurance company can correct it.

IV Contrast Chest CT: Contrast enhanced ct of the chest and abdomen is a good choice to evaluate for interval changes.

See below: Pet scans are generally done but not necessary in every situtation; a ct scan may be enough to make treatment decisions in most cases.