Wilms Tumor

Wilms Tumor, also known as nephroblastoma, is a rare kidney cancer that primarily affects children, typically those under the age of 5. It is the most common type of kidney cancer in pediatrics and accounts for about 90% of all childhood kidney tumors. The disease is named after Dr. Max Wilms, a German surgeon who first described the condition in the late 19th century.

Wilms Tumor usually occurs in just one kidney, but in about 5-10% of cases, it can affect both kidneys simultaneously (bilateral Wilms tumor). It arises from immature kidney cells that fail to develop properly during fetal growth, leading to the formation of a tumor.

Most children with Wilms Tumor present with an abdominal mass or swelling, often noticed by parents during bathing or dressing. Other signs may include abdominal pain, fever, blood in the urine (hematuria), high blood pressure, or loss of appetite.

The prognosis for Wilms Tumor has dramatically improved over the past decades due to advances in multimodal treatment, which often includes surgery, chemotherapy, and sometimes radiation therapy. With appropriate treatment, the survival rate exceeds 90% for localized tumors.

Early diagnosis and proper staging are essential for effective management. Genetic syndromes such as WAGR syndrome, Denys-Drash syndrome, and Beckwith-Wiedemann syndrome are known to increase the risk of Wilms Tumor, so children with these conditions require close monitoring.

Overall, Wilms Tumor is considered a highly treatable cancer in children, particularly when detected early and managed by a specialized pediatric oncology team.

The precise cause of Wilms tumor is not well established, but there are several factors that increase the risk of developing this condition. Research has shown that Wilms tumor often arises from genetic mutations during fetal development.

Genetic and Developmental Factors