[Kidney sponge--treatment--case report].

Medullary sponge kidney (MSK) is a benign asymptomatic developmental anomaly of the kidney mostly seen in adult females. Typical for this morphological abnormality is dilation of the collecting ducts. Intravenosus pyelogram shows accumulation of contrast in dilated ducts giving to the papillae the appearance of a bouquet flowers, characteristic for MSK. Urinary tract infections, nephrolithiasis, hematuria and hyperkalciuria are the common complications of the kidney sponge. We present a case of a 29-year-old female who suffers from recurrent urinary tract infection, nephrolithiasis and distal tubular acidosis. This kind of tubular acidosis is specific for kidney sponge clinical picture.