Treatment of metastatic disease in retinobastoma –
**Core Concept**
Retinoblastoma is a malignant tumor of the retina, primarily affecting children. Metastatic disease in retinoblastoma signifies the spread of cancerous cells from the eye to other parts of the body, such as the central nervous system, bones, or liver. The treatment of metastatic disease in retinoblastoma is challenging and requires a multidisciplinary approach.
**Why the Correct Answer is Right**
Chemotherapy is the primary treatment for metastatic retinoblastoma. The goal of chemotherapy is to kill cancer cells that have spread to other parts of the body. Chemotherapy agents, such as carboplatin, etoposide, and vincristine, are commonly used to treat metastatic retinoblastoma. These agents work by interfering with DNA replication and cell division, ultimately leading to cancer cell death. The combination of these agents has been shown to improve survival rates in patients with metastatic retinoblastoma.
**Why Each Wrong Option is Incorrect**
**Option A:** Radiation therapy is not the primary treatment for metastatic retinoblastoma, although it may be used in some cases to alleviate symptoms or shrink tumors.
**Option B:** Surgery is not effective in treating metastatic disease, as it is not possible to surgically remove cancer cells that have spread to other parts of the body.
**Option C:** Hormone therapy is not relevant in the treatment of retinoblastoma, as this cancer is not hormone-sensitive.
**Clinical Pearl / High-Yield Fact**
Chemotherapy is the cornerstone of treatment for metastatic retinoblastoma, and a combination of agents is often used to achieve the best possible outcomes. It's essential for clinicians to be aware of the potential side effects of chemotherapy and to closely monitor patients for signs of toxicity.
**Correct Answer:** C.