[A rare cause of hydronephrosis in an infant].
D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D007223:Infant; D008297:Male; D009369:Neoplasms / Q000150:complications*; D012445:Sacrococcygeal Region
Rzadka przyczyna wodonercza u niemowlecia.