Giant hydronephrosis: uncommon presentation of a common disease

A 5-year-old boy presented with progressively increasing abdominal distension since birth with no associated urinary or gastrointestinal symptoms. A large, non-tender, soft, cystic intra-abdominal lump occupying almost the whole abdomen could be palpated (figure 1). Other systemic examination and all blood tests were normal. Figure 1 Gross abdominal distension with a mass occupying the whole abdomen. A contrast-enhanced CT scan revealed a large complex cystic mass of …