Why FNAC is not done in Wilm's tumor?

Why FNAC is not done in Wilm’s tumor?

In Wilms FNAC or biopsy usually not needed as on date with a good radiologist (IOC is CECT)

In Wilms, the role of pathologist is to assess the tumor response to chemo post SX and for the nephrogenic rests.

It’s a radiological diagnosis

Only case when you need a biopsy is when there is metastatic disease and surgery is not being t planned