Wilms Tumor | Symptoms & Causes

What are the symptoms of Wilms tumor?

The most common symptom of Wilms tumor is the sudden appearance of a solid mass in the abdomen. Though each child may experience symptoms differently, other symptoms may include:

  • swelling of the abdomen
  • blood in the urine
  • abdominal pain
  • decreased appetite
  • weakness or tiredness
  • fever
  • high blood pressure
  • constipation

Keep in mind that Wilms tumor symptoms may resemble other more common conditions or medical problems. Always consult your child's physician for a diagnosis.

What causes Wilms tumor?

Most cases of Wilms tumor occur with no family history of the disease or other known cause. In a small number of cases, children are born with a genetic predisposition to develop Wilms Tumor. These children have rare genetic syndromes such as:

  • hemihypertrophy
  • WAGR syndrome
  • denys-Drash syndrome
  • beckwith-Wiedemann syndrome