Background: So far, only 9 cases of minimal change
glomerulonephritis (MCGN) related to chronic lymphocytic
leukemia (CLL) have been described. Case Report:
Our patient presented with severe nephrotic syndrome.
Diagnostic biopsies confirmed MCGN and early-stage BCLL
(Binet A). In contrast to previously described cases,
kappa monoclonal IgM and cryoglobulins were also detected.
The patient was treated with chlorambucil and
prednisone. 3 weeks later, renal function and white blood
cell (WBC) count were completely normal. Discussion:
Although, in most cases, renal disease and CLL present
separately, there is evidence for a causal relationship between
the two disorders. Although it is widely approved
that early-stage CLL should not be treated by medication,
the severe nephrotic syndrome in our patient required
immediate intervention. So far, there is no standard therapy
for MCGN associated with CLL. Our combination
therapy resulted in normalization of the nephrotic syndrome
and the WBC count. Hence, we emphasize the importance
of early recognition of renal symptoms in CLL
and propose a successful therapy for nephrotic syndrome
in MCGN associated with early-stage B-CLL. Additionally,
the pathophysiological and therapeutic aspects
of MCGN associated with CLL are retrospectively discussed.