Husband,57 has cll,no treatment yet; been told he has proteinuria, but kidneys ok. can you tell us why, please? connected to cll? thank you.

Protenuria: The loss of protien in the urine ocurrs when the kidneys stop filtering blood correctly. A simplifed explanation is that the filter paper that make up the kidneys becomes more porus, allowing large protien molecules to pass. A typical cause of this is IgA nephropathy, which can be assocaited with lymphomas and CLL. Other common causes such as diabetes would need to be excluded.