Carcinoid

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Obesity, Sleep & Internal medicine
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Carcinoid
Synonyms	Neuroendocrine tumor
Pronounce	N/A
Specialty	N/A
Symptoms	Flushing, diarrhea, abdominal pain, wheezing
Complications	Carcinoid syndrome, heart valve disease, intestinal obstruction
Onset	Typically in adulthood
Duration	Chronic
Types	N/A
Causes	Genetic mutations
Risks	Family history, smoking, alcohol consumption
Diagnosis	Biopsy, imaging studies, blood tests
Differential diagnosis	Irritable bowel syndrome, inflammatory bowel disease, gastroenteritis
Prevention	None known
Treatment	Surgery, chemotherapy, radiation therapy, somatostatin analogs
Medication	Octreotide, lanreotide
Prognosis	Variable, depends on stage and location
Frequency	Rare
Deaths	Varies, depending on stage and treatment

Carcinoid Tumors

Carcinoid tumors are a type of neoplasm that primarily develops in the mucosa of the gastrointestinal tract. These tumors can be either benign or malignant and are often associated with an excessive secretion of Serotonin.

Carcinoid tumor in the small intestine

Characteristics

Carcinoid tumors are distinctive for their potential to produce serotonin, a neurotransmitter involved in the regulation of mood, digestion, and other bodily functions. The overproduction of serotonin by these tumors can lead to unique clinical symptoms.

Location

While carcinoid tumors can develop in any part of the gastrointestinal tract, they are most commonly found in the:

• Appendix
• Small intestine
• Rectum

Symptoms and Carcinoid Syndrome

In some cases, especially when the tumor metastasizes, it can lead to a condition known as Carcinoid syndrome. Symptoms of this syndrome include:

• Flushing
• Diarrhea
• Wheezing
• Abdominal pain

Diagnosis

Diagnosis of carcinoid tumors typically involves:

• Imaging tests such as CT scans or MRI
• Endoscopic examinations
• Biopsy and histological analysis
• Measurement of serotonin levels in the blood

Treatment

Treatment options vary depending on the location and size of the tumor, and whether it has metastasized. Common treatments include:

• Surgical removal of the tumor
• Medication to control symptoms
• Chemotherapy and radiation therapy for advanced cases

External Links

• American Cancer Society: Gastrointestinal Carcinoid Tumors
• Mayo Clinic: Carcinoid Tumors