Parenchymal renal involvement in three cases of non-Hodgkin lymphomas: clinical and pathological features

Parenchymal neoplastic invasion of the kidneys is a common postmortem finding in patients who have died from advanced non Hodgkin's lymphomas (NHL). However, it rarely causes major clinical consequences, such as impairment of glomerular and tubular function, acute or rapidly progressive renal failure. Renal involvement is even less frequent as a first manifestation of NHL, the so-called "primary" renal lymphoma. A review of the main clinical, diagnostic and pathological aspects of three cases observed in our division is presented here.