A six year old male baby presents to a hospital with recurrent gross hematuria for 2 years. There is no h/o burning micturition or pyuria. Urine routine examination demonstrated no pus cells and urine culture was sterile. Serum C3 levels were normal. What is the most probable diagnosis-
Correct Answer: Wilm's tumour
Description: Wilms tumor is a rare kidney cancer that is highly treatable. Most kids with Wilms tumor survive and go on to live normal, healthy lives. Also known as nephroblastoma, Wilms tumor can affect both kidneys, but usually develops in just one Wilms' Tumor; Nephroblastoma) Wilms tumor is an embryonal cancer of the kidney composed of blastemal, stromal, and epithelial elements. Genetic abnormalities have been implicated in the pathogenesis, but familial inheritance accounts for only 1 to 2% of cases. Diagnosis is by ultrasonography, abdominal CT, or MRI The AMER1 gene is located on the X chromosome (one of the two sex chromosomes), so when Wilms tumor is caused by mutations in this gene, the condition follows an X-linked dominant pattern Ref Harrison20th edition pg 233
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