Flank pain radiating to the suprapubic region
A 33 year old woman presented at the urology department with a two year history of intermittent flank pain radiating to the suprapubic region. She had no medical or family history of note. Examination showed that she had microscopic haematuria and proteinuria. Radiological investigations were carried out (figs 1 and 2).
Although medullary sponge kidney is autosomal dominant, most cases are sporadic, and in less than 5% of cases is there family history.5 Unlike in autosomal dominant polycystic kidney disease, cysts are not seen elsewhere in the body, and renal failure is uncommon.