About Wilms Tumor (Nephroblastoma)
While the exact causes of Wilms tumor are still unknown, researchers have identified several factors that may increase a child's risk of developing this condition.
Non-modifiable risk factors for Wilms tumor include:
- Genetic factors: While children do not directly inherit Wilms tumor from their parents, certain genetic factors can increase their risk. Mutations in genes such as WT1, CTNNB1, and AMER1 have been found in children with Wilms tumor. Additionally, specific genetic syndromes like Beckwith-Wiedemann syndrome and WAGR syndrome are associated with an increased risk of developing Wilms tumor.
- Developmental irregularities: Certain developmental conditions like aniridia (missing or partially missing iris), hemihypertrophy (asymmetrical body growth), cryptorchidism (undescended testicles), and hypospadias (urinary opening on the underside of the penis) have been linked to an increased risk of Wilms tumor.
Modifiable risk factors for Wilms tumor are not well-established, but some studies have suggested potential associations with environmental factors. Researchers have not found clear links between environmental factors like drugs, chemicals, or infectious agents and the development of Wilms tumor. However, further research is needed to understand the potential impact of these factors on the risk of developing this condition.
It's important to note that while these risk factors may increase the likelihood of developing Wilms tumor, most children with these risk factors will not develop the disease. Additionally, many children with Wilms tumor do not have any known risk factors.
Wilms tumor is a type of kidney cancer that primarily affects children. The symptoms of Wilms tumor can vary depending on the stage, progression, or severity of the tumor.
Common symptoms of Wilms tumor include:
- Abdominal swelling or a mass in the kidney that can be felt upon physical examination
- Abdominal pain
- Fever for no known reason
- Blood in the urine (hematuria)
- High blood pressure (hypertension)
- Loss of appetite
- Weight loss
- Nausea
- Vomiting
- Tiredness (lethargy)
- Constipation
In some cases, Wilms tumor may spread from the kidneys to other parts of the body. If this happens, it can cause symptoms such as coughing, blood in the sputum and trouble breathing.
It's important to note that these symptoms can also be caused by other conditions. If your child experiences any of these symptoms, it's important to consult with their doctor for an accurate diagnosis.With proper treatment, children with Wilms tumor have a 90 percent survival rate. Early detection and prompt medical attention are key to improving outcomes for children with this condition.
To diagnose Wilms tumor, healthcare providers commonly perform the following examinations, tests, and procedures:
- Physical exam and health history: The healthcare provider will examine the body for any signs of a medical problem, such as pain, swelling, or the presence of masses within the body. They will also ask about the patient's health habits, past illnesses, and treatments.
- Complete blood count (CBC): This procedure involves drawing a blood sample to check the number of red blood cells, white blood cells, and platelets in the blood. It also measures the amount of hemoglobin (the protein that carries oxygen) in the red blood cells.
- Blood chemistry studies: A blood sample is checked to measure the amounts of certain substances released into the blood by organs and tissues in the body. This test helps assess how well the liver and kidneys are functioning.
- Ultrasound exam: High-energy sound waves are used to create images of internal tissues or organs. An ultrasound of the major heart vessels is done to stage Wilms Tumor.
- MRI (magnetic resonance imaging): This procedure uses a magnet, radio waves, and a computer to create detailed pictures of areas inside the body such as the abdomen, pelvis, and brain. It helps in diagnosing Wilms Tumor.
To determine the stage or severity of Wilms tumor, additional examinations, tests, and procedures may be performed:
- Bone scan: A small amount of radioactive material is injected into a vein and travels through the bloodstream. The material collects in areas with rapidly dividing cells, such as cancer cells in bones. A scanner detects this radioactive material and helps determine if there is cancer in the bones.
- CT scan: This imaging study uses X-rays to create detailed cross-sectional images of the body. It helps assess if cancer has spread to other organs.
The stages of Wilms Tumor are as follows:
- Stage 1: The tumor is contained within one kidney and can be completely removed with surgery.
- Stage 2: The tumor has spread into surrounding tissues and vessels around the kidney but can still be completely removed with surgery.
- Stage 3: The tumor cannot be completely removed with surgery, and some cancer remains in the abdomen including nearby lymph nodes.
- Stage 4: The cancer has spread to distant organs such as the lungs, liver, brain or distant lymph nodes.
- Stage 5: Both kidneys have tumors. Each side is staged separately.
These examinations, tests, and procedures help healthcare providers diagnose Wilms tumor accurately and determine its stage or severity for appropriate treatment planning.
The goals of treatment for Wilms tumor are to remove the tumor, prevent the spread of cancer, and preserve kidney function. Here are the different types of treatments and how they work to achieve these goals:
- Surgery: Surgery is usually the first treatment used for Wilms Tumor. The goal of surgery is to remove the tumor from the kidney. In some cases, if the tumor is too big or has spread to both kidneys or blood vessels, chemotherapy or radiation therapy may be used first to shrink the tumor before surgery.
- Chemotherapy: Chemotherapy is a medication treatment that uses drugs to kill cancer cells or stop them from growing. It is often given before or after surgery to help shrink the tumor and prevent the spread of cancer cells.
- Radiation Therapy: Radiation therapy uses high-energy X-rays or other types of radiation to kill cancer cells or stop them from growing. It may be used after surgery or as part of the treatment plan for Wilms Tumor. Radiation therapy is typically targeted at the abdomen or flank area (between the ribs and hipbone) where the tumor was located.
- Health Behavior Changes: While not a direct treatment for Wilms Tumor, making certain health behavior changes can support overall treatment goals and improve outcomes. These changes may include maintaining a healthy diet, getting enough rest, and following any specific recommendations from healthcare providers.
It's important to note that each treatment plan is individualized based on factors such as the stage of the tumor, histology (cell type), and overall health of the patient. The specific medications, therapies, and procedures recommended will vary depending on these factors.
Overall, by combining surgery, chemotherapy, radiation therapy, and adopting healthy behaviors, healthcare providers aim to remove the tumor, prevent its spread, preserve kidney function, and improve the long-term quality of life for children with Wilms Tumor.
Wilms tumor is a type of kidney cancer that primarily affects children between the ages of 2 and 3. The survival rate for children with Wilms tumor is excellent, with an overall survival rate of more than 85%. However, it's important to understand the natural progression of Wilms tumor and the potential complications that can arise.
The risk of Wilms tumor recurring (coming back) varies between 15% and 50%, depending on the characteristics of the original tumor. Recurrence typically occurs within the first 2 years following treatment and can develop in the kidneys or other tissues, such as the lungs. This highlights the importance of regular follow-up care to monitor for any signs of recurrence.
In addition to recurrence, there are several potential complications associated with Wilms tumor. These complications can arise from both the tumor itself and the treatment used to combat it. Some common complications include:
- Decreased kidney function: Wilms tumor can affect kidney function, leading to a decrease in its ability to filter waste products from the blood. This can result in long-term kidney problems that require ongoing monitoring and management.
- Heart disease: Some individuals who have had Wilms tumor may develop heart disease later in life. Regular cardiac evaluations are important to detect any potential issues early on.
- Development of additional cancers: There is a small risk of developing additional cancers after treatment for Wilms tumor. This emphasizes the need for continued surveillance and follow-up care to detect any new cancerous growths.
- Treatment-related complications: The treatments used to cure, slow progression, or reduce complications of Wilms tumor can sometimes lead to their own set of side effects. Chemotherapy, for example, may cause hair loss, nausea and vomiting, fatigue, diarrhea, anemia, loss of appetite, weight loss, pain, neutropenia (low white blood cell count), mouth sores, bruising, sleep problems, bladder issues, skin and nail changes, and an increased risk of infection. These side effects vary from child to child and should be discussed with a doctor.
It's important to note that while treatment for Wilms tumor aims to cure the cancer and reduce complications, it can also have its own impact on the body. Chemotherapy drugs used in treatment may increase the risk of secondary malignant tumors in the future. Additionally, certain chemotherapeutic agents can have specific toxicities and may interfere with hearing or cardiac function. It is important to consult with healthcare professionals with experience in treating Wilms tumor to understand the benefits and risks of treatment options.
Remember that this information serves as a general overview and it's always important to consult with a healthcare professional who can provide personalized advice based on an individual's specific situation.