Nephrogenic adenoma is a benign growth typically found in the urinary bladder.

It is thought to result from displacement and implantation of renal tubular cells, as this entity in kidney transplant recipients has been shown to be kidney donor derived.

Microscopically the tumor shows closely packed small tubular structures in edematous stroma.

The single layer of cells lining the tubules are cuboidal with a scant to moderate amount of cytoplasm.

Prolonged antibiotic therapy is suggested due to the frequent finding of UTI as an associated or causative factor.