Which of the following is true regarding Wilm's tumor?
Commonest presenting feature is lump abdomen
Invariably unilateral
Extremely poor prognosis in infants
All the above
The triad of Wilm's tumor is abdominal mass, pyrexia and hematuria. 5% of the cases have bilateral mass. Wilms tumor or nephroblastoma, is the most common childhood abdominal malignancy. At present, survival rates of children with Wilms tumor are approximately 80-90%. Examples of common congenital anomalies associated with Wilms tumor are cryptorchidism, a double collecting system, horseshoe kidney and hypospadias.