Carcinoid Tumors

Carcinoid tumors are a type of neuroendocrine tumor that can occur in various parts of the body, including the lungs, gastrointestinal tract, and thymus. They are typically slow-growing and can produce excess hormones, leading to a range of symptoms.

Types of Carcinoid Tumors

Carcinoid tumors can be classified into different types based on their location and characteristics. The most common types include:

  • Lung carcinoids: These occur in the lungs and are often associated with smoking.
  • Gastrointestinal carcinoids: These occur in the digestive tract, including the stomach, small intestine, and colon.
  • Thymic carcinoids: These occur in the thymus gland, which is located behind the sternum.

Symptoms of Carcinoid Tumors

The symptoms of carcinoid tumors can vary depending on the location and size of the tumor. Common symptoms include:

Carcinoid Syndrome

Carcinoid syndrome is a condition that occurs when carcinoid tumors produce excess serotonin and other hormones. This can lead to a range of symptoms, including:

  • Flushing or redness of the skin
  • Diarrhea or abdominal pain
  • Wheezing or shortness of breath
  • Heart valve problems

Diagnosis and Treatment

Carcinoid tumors are typically diagnosed using a combination of imaging tests, such as CT scans or MRI scans, and blood tests to measure hormone levels. Treatment options may include:

  • Surgery to remove the tumor
  • Chemotherapy or radiation therapy to shrink the tumor
  • Medications to manage symptoms and hormonal imbalances
  • Somatostatin analogs, which can help reduce hormone production

Prognosis and Outlook

The prognosis for carcinoid tumors depends on the location, size, and type of tumor, as well as the overall health of the individual. With proper treatment, many people with carcinoid tumors can experience significant improvement in symptoms and quality of life.

Frequently Asked Questions (FAQs)

What are carcinoid tumors?
Carcinoid tumors are rare, slow-growing tumors that arise from neuroendocrine cells.

Where are carcinoid tumors typically found?
They are usually found in the gastrointestinal tract, lungs, or thymus gland.

What causes carcinoid tumors?
The exact cause is unknown, but genetic and environmental factors may contribute.

What are the symptoms of carcinoid tumors?
Symptoms can include flushing, diarrhea, wheezing, and heart valve problems, depending on tumor location and size.

How are carcinoid tumors diagnosed?
Diagnosis typically involves imaging tests, blood tests, and biopsy to confirm the presence of a tumor.

Can carcinoid tumors be cancerous?
Most carcinoid tumors are benign, but some can become malignant and spread to other parts of the body.

What is carcinoid syndrome?
Carcinoid syndrome is a condition that occurs when a carcinoid tumor produces excessive amounts of certain hormones, leading to symptoms like flushing and diarrhea.

How are carcinoid tumors treated?
Treatment options may include surgery, chemotherapy, radiation therapy, or targeted therapy, depending on the tumor's location, size, and whether it has spread.

Can carcinoid tumors be cured?
In some cases, surgical removal of a carcinoid tumor can be curative, but the prognosis depends on various factors, including tumor type and stage.

Are there any supportive care options for carcinoid tumor patients?
Yes, supportive care may include medications to manage symptoms, nutritional support, and emotional counseling to improve quality of life.

Article last updated on: 18th October 2025.
If you have any feedback, please get in touch.

See more

 Conditions  Symptoms  Procedures

Diagnosis Pad
Medical AI Assistant with Differentials, Guidance, Transcriptions, Notes, Medical Encyclopedia and Explainable AI.
Download from App Store Download from Google Play
Available for iOS, macOS and Android.

Medical Disclaimer

The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this site. We we do not guarantee, and assume no legal liability or responsibility for the accuracy, currency, or completeness of the information provided.