[Renal complications of sickle-cell anaemia].

There are six described complications of sickle cell trait or disease : gross hematuria, renal infarction, papillary necrosis, nephrotic syndrome and urine concentration defects. Because of a high frequency of sickle cell trait patients among patients suffering from medullary kidney carcinoma, it has been called the seventh complication. We briefly review physiopatholgy and diagnosis of these complications.