Medullary Thyroid Cancer

12 min read

Medullary thyroid cancer (MTC) is a rare type of thyroid cancer that begins in the C cells of the thyroid gland. It is a type of neuroendocrine tumor, meaning it is derived from cells that have features of both nerve cells and hormone-producing cells. MTC is usually diagnosed in adults, but it can also occur in children.

Causes of Medullary Thyroid Cancer

MTC is caused by a genetic mutation in the RET gene. This gene is responsible for producing a protein that helps control cell growth and development. Mutations in the RET gene can cause cells to grow and divide uncontrollably, leading to the development of MTC.

Risk Factors for Medullary Thyroid Cancer

The most common risk factor for MTC is a family history of the disease. People with a family history of MTC are more likely to develop the disease than those without a family history. Other risk factors include certain genetic syndromes, such as multiple endocrine neoplasia type 2 (MEN2) and familial medullary thyroid cancer (FMTC).

Diagnosis of Medullary Thyroid Cancer

MTC is usually diagnosed with a combination of imaging tests, such as ultrasound, CT scan, and MRI, and blood tests. A biopsy of the thyroid gland may also be performed to confirm the diagnosis. In some cases, genetic testing may be used to identify the RET gene mutation.

Prognosis of Medullary Thyroid Cancer

The prognosis for MTC depends on the stage of the cancer and the patient’s overall health. In general, the earlier the cancer is diagnosed, the better the prognosis. Treatment options for MTC include surgery, radiation therapy, and chemotherapy.

Take the Medullary Thyroid Cancer Assessment

Symptoms

Common Symptoms of Medullary Thyroid Cancer

The most common symptom of MTC is a lump or swelling in the neck. Other symptoms may include:

  • Hoarseness
  • Difficulty swallowing
  • Pain in the neck or throat
  • Coughing
  • Shortness of breath
  • Unexplained weight loss
  • Fatigue

Less Common Symptoms of Medullary Thyroid Cancer

In some cases, MTC may cause other symptoms, such as:

  • Diarrhea
  • Flushing
  • Nausea
  • Vomiting
  • Abdominal pain
  • High blood pressure
  • Excessive sweating

When to See a Doctor

If you experience any of the symptoms of MTC, it is important to see a doctor as soon as possible. Early detection and treatment can improve the prognosis. Your doctor may order tests, such as a physical exam, blood tests, imaging tests, or a biopsy, to diagnose MTC.

Causes

Genetic Factors

MTC is often caused by genetic mutations that are passed down from parent to child. The most common genetic mutation associated with MTC is a mutation in the RET gene. This mutation is responsible for about 80% of all cases of MTC. Other genetic mutations that can increase the risk of MTC include mutations in the MEN1, HRAS, and VHL genes.

Family History

Having a family history of MTC can also increase the risk of developing this type of cancer. If a close relative has had MTC, then the risk of developing the disease is increased. It is important to talk to your doctor if you have a family history of MTC in order to determine if you should be tested for the RET gene mutation.

Other Risk Factors

Other risk factors for MTC include being over the age of 40, having a history of radiation exposure, and having certain medical conditions such as multiple endocrine neoplasia type 2 (MEN2). It is important to talk to your doctor if you have any of these risk factors in order to determine if you should be tested for MTC.

Conclusion

MTC is a rare type of thyroid cancer that is caused by genetic mutations and family history. It is important to talk to your doctor if you have any of the risk factors for MTC in order to determine if you should be tested for the disease.

Getting a Diagnosis

Imaging Tests

Imaging tests such as ultrasound, CT scan, and MRI are used to look for tumors in the thyroid gland. These tests can also help determine the size and location of the tumor, as well as whether it has spread to other parts of the body.

Blood Tests

Blood tests can be used to measure levels of calcitonin, a hormone produced by the C cells of the thyroid gland. High levels of calcitonin in the blood can indicate the presence of MTC.

Biopsy

A biopsy is the only way to definitively diagnose MTC. During a biopsy, a small sample of tissue is taken from the thyroid gland and examined under a microscope. This can help determine whether the tumor is cancerous and, if so, what type of cancer it is.

Conclusion

Diagnosis of MTC typically involves a combination of imaging tests, blood tests, and biopsies. Early diagnosis is important, as MTC can spread to other parts of the body if left untreated. If you have any symptoms of MTC, it is important to speak to your doctor as soon as possible.

Questions for Your Doctor

Diagnosis and Staging

Your doctor will discuss your diagnosis and the stage of your cancer. Staging is a way of describing how far the cancer has spread. Knowing the stage of your cancer helps your doctor decide on the best treatment plan for you.

Treatment Options

Your doctor will discuss the different treatment options available to you. These may include surgery, radiation therapy, chemotherapy, targeted therapy, and immunotherapy. Your doctor will explain the risks and benefits of each option and help you decide which one is best for you.

Follow-up Care

Your doctor will discuss the follow-up care you will need after treatment. This may include regular check-ups, blood tests, imaging tests, and other tests to monitor your health. Your doctor will also discuss any lifestyle changes you may need to make to reduce your risk of the cancer coming back.

Side Effects

Your doctor will discuss the possible side effects of your treatment. These may include fatigue, nausea, hair loss, and other symptoms. Your doctor will explain how to manage these side effects and when to call for help.

Support

Your doctor may also discuss the importance of having a support system. This may include family, friends, and support groups. Your doctor can help you find resources to help you cope with your diagnosis and treatment.

Treatment

Surgery

Surgery is the most common treatment for MTC. The goal of surgery is to remove the cancerous cells and any nearby lymph nodes. Depending on the size and location of the tumor, the surgeon may remove the entire thyroid gland, or just part of it. In some cases, the surgeon may also remove nearby lymph nodes to check for cancer cells.

Radiation Therapy

Radiation therapy is a type of treatment that uses high-energy beams to kill cancer cells. It is usually used after surgery to destroy any remaining cancer cells. Radiation therapy may also be used to relieve symptoms caused by the cancer, such as pain or difficulty swallowing.

Chemotherapy

Chemotherapy is a type of treatment that uses drugs to kill cancer cells. It is usually used after surgery to destroy any remaining cancer cells. Chemotherapy may also be used to relieve symptoms caused by the cancer, such as pain or difficulty swallowing.

Targeted Therapy

Targeted therapy is a type of treatment that uses drugs to target specific molecules in cancer cells. It is usually used after surgery to destroy any remaining cancer cells. Targeted therapy may also be used to relieve symptoms caused by the cancer, such as pain or difficulty swallowing.

It is important to talk to your doctor about the best treatment plan for your individual case of MTC. Your doctor will consider your age, overall health, and the stage of the cancer when deciding on the best treatment option for you.

Drugs & Medications

Drugs Used to Treat MTC

The most common drugs used to treat MTC are tyrosine kinase inhibitors (TKIs). These drugs work by blocking the activity of certain proteins that help cancer cells grow and spread. Examples of TKIs used to treat MTC include vandetanib (Caprelsa) and cabozantinib (Cometriq).

Other drugs used to treat MTC include interferon alfa-2b (Intron A), which is a type of immunotherapy that helps the body's immune system fight cancer cells. It is usually given as an injection. Other drugs used to treat MTC include somatostatin analogs, such as octreotide (Sandostatin) and lanreotide (Somatuline Depot). These drugs work by blocking the release of hormones that can stimulate the growth of cancer cells.

Side Effects of MTC Drugs

The side effects of MTC drugs vary depending on the type of drug and the individual. Common side effects of TKIs include nausea, diarrhea, fatigue, and rash. Interferon alfa-2b can cause flu-like symptoms, such as fever, chills, and muscle aches. Somatostatin analogs can cause abdominal pain, nausea, and diarrhea.

Conclusion

Medullary thyroid cancer is a rare type of thyroid cancer that is usually treated with a combination of surgery, radiation therapy, and chemotherapy. In some cases, drugs may be used to help control the cancer or to reduce the risk of recurrence. Examples of drugs used to treat MTC include tyrosine kinase inhibitors, interferon alfa-2b, and somatostatin analogs. Side effects of these drugs vary depending on the type of drug and the individual.

Diet

Eat a Balanced Diet

Eating a balanced diet is important for everyone, but especially for those with MTC. Eating a variety of foods from all the food groups can help ensure that you are getting all the nutrients you need. Aim to include plenty of fruits, vegetables, whole grains, lean proteins, and healthy fats in your diet.

Limit Processed Foods

Processed foods are often high in sodium, sugar, and unhealthy fats. Eating too much of these foods can lead to weight gain and other health problems. Try to limit your intake of processed foods and opt for fresh, whole foods instead.

Stay Hydrated

Staying hydrated is important for everyone, but especially for those with MTC. Drinking plenty of water can help keep your body functioning properly and can help reduce fatigue. Aim to drink at least 8 glasses of water per day.

Limit Alcohol Intake

Alcohol can interfere with the body's ability to absorb certain nutrients, so it is important to limit your intake. If you do choose to drink, do so in moderation and be sure to drink plenty of water to stay hydrated.

Get Enough Sleep

Getting enough sleep is important for everyone, but especially for those with MTC. Aim to get 7-8 hours of sleep each night to help your body rest and recover. If you are having trouble sleeping, talk to your doctor about ways to improve your sleep.

Talk to Your Doctor

It is important to talk to your doctor about your diet and any changes you are considering making. Your doctor can help you create a diet plan that is tailored to your individual needs and can help you make sure you are getting all the nutrients you need.

Lifestyle

Eat a Healthy Diet

Eating a healthy diet is important for everyone, but especially for those with MTC. Eating a diet rich in fruits, vegetables, and whole grains can help reduce your risk of developing MTC. Additionally, limiting your intake of processed and sugary foods can help reduce your risk. Eating a healthy diet can also help you maintain a healthy weight, which is important for reducing your risk of developing MTC.

Exercise Regularly

Exercising regularly is important for everyone, but especially for those with MTC. Regular exercise can help reduce your risk of developing MTC by helping you maintain a healthy weight. Additionally, regular exercise can help reduce stress, which can help reduce your risk of developing MTC. Aim for at least 30 minutes of moderate exercise per day.

Avoid Smoking and Alcohol

Smoking and drinking alcohol can increase your risk of developing MTC. If you are a smoker, quitting can help reduce your risk of developing MTC. Additionally, limiting your alcohol intake can help reduce your risk. Aim to drink no more than one drink per day for women and two drinks per day for men.

Get Regular Check-Ups

Getting regular check-ups is important for everyone, but especially for those with MTC. Regular check-ups can help detect any changes in your thyroid that may indicate the presence of MTC. Additionally, regular check-ups can help you stay on top of any treatments or medications that you may need to take to manage your MTC.

Manage Stress

Stress can increase your risk of developing MTC, so it is important to manage your stress levels. Taking time for yourself to relax and unwind can help reduce your stress levels. Additionally, engaging in activities such as yoga, meditation, and deep breathing can help reduce your stress levels. Finally, talking to a therapist or counselor can help you manage your stress levels.

Conclusion

Medullary thyroid cancer is a rare form of thyroid cancer that affects the C cells of the thyroid gland. Taking steps to manage your lifestyle can help reduce your risk of developing MTC. Eating a healthy diet, exercising regularly, avoiding smoking and alcohol, getting regular check-ups, and managing stress can all help reduce your risk of developing MTC.