What is Retinoblastoma?

Retinoblastoma is a rare but fatal form of eye cancer that can develop in the retina, a light-sensitive layer at the rear of the eye. The disease most commonly affects children who are under the age of five years. This disease is still rare, but it is the most common form of primary intraocular cancer that affects children.

Retinoblastoma occurs when immature retinal cells undergo uncontrolled growth due to genetic mutations. Retinoblastoma may be unilateral or bilateral. Unilateral means that it affects only one eye, while bilateral means that it affects both eyes.

The combination of early diagnosis and modern treatment methods enables doctors to cure retinoblastoma. Survival rates in treatment settings outside developing countries exceed 95 percent.

The treatment process aims to achieve specific outcomes, which include:

• Saving the child's life
• Preserving the eye whenever possible
• Preserving vision
• Preventing the spread of cancer

The medical team requires immediate treatment because the disease develops at such a fast rate.

What are the Symptoms & Causes of Retinoblastoma?

Symptoms

Leukocoria, a white reflection in the pupil, is the primary symptom of retinoblastoma. The condition becomes apparent to parents when they see their child in flash photographs, as one eye appears white rather than red.

Other symptoms may include:

• Crossed eyes (strabismus)
• Poor vision
• Eye redness
• Skin swelling around the eye
• Eye enlargement
• Eye color mismatch between both irises (rare)
• Eye pain (in advanced disease)

The advanced stage results in these symptoms:

• Eye bulging
• An infection that persists despite ongoing treatment attempts
• The body shows signs of infection that have spread to the brain or bone marrow, a rare but dangerous occurrence.

The eye screening program should be conducted regularly for young children, as they cannot identify their visual impairments.

Causes

The cause of retinoblastoma is a genetic mutation in the RB1 tumor suppressor gene. If both RB1 genes are inactivated, cell division becomes uncontrolled, leading to tumors.

The main types include:

1. Hereditary Retinoblastoma

The RB1 gene harbors a germline mutation that causes this condition. Both eyes are affected by the condition. The condition runs in families with a history of the disease. The condition raises the likelihood of developing additional cancers in future years.

2. Non-Hereditary (Sporadic) Retinoblastoma

The mutation occurs only within retinal cells. One eye usually becomes affected by the condition. The disease does not pass to the next generation.

Children with hereditary retinoblastoma require long-term monitoring for secondary cancers.

Why early Diagnosis & Tests are important for Retinoblastoma?

Early diagnosis leads to better patient outcomes.

1. Eye Examination Under Anesthesia (EUA)

   Because young children cannot cooperate with detailed exams, a complete eye examination is performed under anesthesia.

   The ophthalmologist uses this method to conduct:

   • A comprehensive examination of the retina
   • Tumor measurement of the maximum dimension
   • Tumor identification through assessment of the total number and tumor distribution

2. Imaging Studies

   The entire tumor volume and whether cancer cells have spread to other parts of the body can be assessed using imaging.

   • An ocular ultrasound
   • An MRI scan of the orbit and brain
   • A CT scan, which is less commonly used because of its radiation dangers

   The preferred method for evaluating optic nerve involvement and potential brain spread is MRI.

3. Staging

   The International Classification of Retinoblastoma (ICRB) classifies retinoblastoma using a tumor grouping system that ranges from A to E to indicate tumor severity.

   • Small tumors that stay away from critical body parts constitute Group A
   • Group B-D: Increasing tumor size and complexity
   • Advanced disease with poor visual potential color defines Group E.

   The process of systemic staging involves the following diagnostic methods:

   • Bone marrow examination
   • Lumbar puncture (in advanced cases)

4. Genetic Testing

   RB1 gene testing should be performed for every child diagnosed with retinoblastoma. The program assists in:

   • Detect hereditary cases of the condition.
   • Determine the cancer risk that exists for siblings.
   • Help in making future family planning decisions.
   • Establish a schedule for future medical surveillance.

What are the treatment options for Retinoblastoma?

The treatment approach depends on these factors:

• The number of affected eyes
• The dimensions and position of the tumors
• The existence of cancer spreading
• The genetic makeup of the patient

The management process requires an oncology team that specializes in pediatric care.

Chemotherapy

Chemotherapy is most crucial in the treatment of retinoblastoma.

Systemic Chemotherapy

The intravenous administration of drugs serves the following purposes:

• Tumor reduction
• The creation of conditions that enable local therapies to work
• The decrease in cases that require eye removal

The medical field commonly administers vincristine, etoposide, and carboplatin as standard treatment drugs.

Intra-Arterial Chemotherapy (IAC)

with this advanced technique:

• The ophthalmic artery receives chemotherapy directly.
• Provides high drug concentration to the tumor
• Reduces systemic side effects

IAC treatment proves most effective for patients with advanced unilateral cases.

Intravitreal Chemotherapy

Injected directly into the eye:

• Used for vitreous seeds (floating tumor cells)
• Improves local tumor control.

Local Therapies

Local treatments are implemented after chemotherapy achieves tumor shrinkage to eliminate the remaining tumor cells.

Laser Therapy (Photocoagulation)

• The technique destroys small tumors.
• The method treats patients with early-stage disease.

Cryotherapy

• The procedure uses freezing to eliminate tumor tissues.
• The method treats patients with small tumors found in peripheral areas.

Thermotherapy

• The technique utilizes thermal energy to eliminate cancer cells.

Radiation Therapy

The external beam radiation treatment is less frequently utilized in current medical practice because it causes long-term side effects that affect patients with genetic predispositions.

The treatment remains an option for patients with specific cases of advanced or treatment-resistant tumors, and the doctor's use of plaque brachytherapy for particular medical conditions.

Surgery (Enucleation)

When:

• The tumor reaches an extensive size.
• The eye cannot provide any visual potential.
• The cancer endangers the patient's life.

The surgical procedure of enucleation results in the complete removal of the affected eye.

Post-removal, the process involves:

• The first step requires placement of an orbital implant.
• The patient receives a prosthetic eye at a later date to achieve cosmetic results.

Enucleation continues to save lives for patients who face advanced medical conditions.

Treatment for Extraocular Disease

When cancer extends beyond the eye, doctors implement:

• The use of intensive chemotherapy
• The implementation of radiation therapy
• Stem cell transplantation, which is reserved for high-risk patients

Patient outcomes improve with active treatment, even in complicated, later-stage cases.

What are the Complications of retinoblastoma ?

The process can result in various complications, which include:

• The patient experiences vision loss.
• The patient develops cataracts.
• The patient develops tumors as a result of radiation therapy.
• Children who receive radiation treatment may develop facial growth abnormalities.
• The treatment has a psychological impact on the patient.

The hereditary retinoblastoma patients experience a higher chance of developing:

• The condition of osteosarcoma
• Soft tissue sarcoma
• Melanoma
• Brain tumors that arise from trilateral retinoblastoma

The long-term medical monitoring process needs to continue for patients.

What is Outlook / Prognosis for Retinoblastoma?

Prognosis depends on:

• The stage of the disease when the patient receives their first diagnosis
• The disease remains limited to the eye area.
• The patient has a certain genetic makeup.
• The person needs specialized medical treatment.

The survival rate exceeds 95% for patients with early-stage disease who only have eye involvement.

When doctors treat bilateral cases promptly, patients can maintain long-term functional vision in one eye.

The survival rate decreases with advanced extraocular spread, but patients who undergo aggressive treatment can still achieve favorable outcomes.

The long-term follow-up process requires patients to:

• They need regular eye tests.
• Hereditary cases need MRI monitoring to check their health status.
• They need screening to detect any cancers that develop after their initial diagnosis.
• They should receive genetic counseling services.

The survival rate for patients improves with early detection, which begins with the identification of leukocoria.

Why Long-Term Follow-Up Care needed?

The medical team needs to monitor children for:

• The possibility of their tumor reappearing.
• The emergence of second cancers.
• The progression of their visual skills.
• Development of their facial features.
• Psychological need for support.

Patients with inherited diseases continue to receive survivorship treatment throughout their adulthood.

Why choose Tender Palm Super-Speciality Hospital for Retinoblastoma Treatment in Lucknow, India?

Tender Palm Super-Speciality Hospital offers advanced Retinoblastoma treatment in Lucknow, India, at an affordable cost. We have a team of experienced pediatric ophthalmologists and oncology specialists who provide accurate diagnosis and both non-surgical and surgical treatment options including chemotherapy, laser therapy, and enucleation procedures. Our Pediatric Ophthalmology and Oncology team has decades of experience in successfully treating Retinoblastoma in Lucknow, India.

To seek an Expert consultation for Retinoblastoma Treatment in Lucknow, India:

Call us at +91-9076972161
Email at care@tenderpalm.com

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