Atypical carcinoid and typical carcinoid are both types of tumors that are categorized as neuroendocrine tumors, or NETs. While both types of tumors have similar characteristics, there are some key differences between them.
Typical carcinoid tumors are the most common type of NETs. They are considered to be slow-growing tumors and are typically found in the lungs, digestive tract, or thymus gland. These tumors tend to produce hormones, which can cause a variety of symptoms, including flushing, shortness of breath, and abdominal pain. In most cases, typical carcinoid tumors can be treated with surgery, but in some cases, additional treatments may be necessary.
Atypical carcinoid tumors, on the other hand, are less common and tend to be more aggressive than typical carcinoid tumors. These tumors are typically found in the lungs and are associated with an increased risk of metastasis, or the spread of cancer to other parts of the body. They grow more quickly than typical carcinoid tumors and often produce fewer hormones, so symptoms may not be as pronounced. Atypical carcinoid tumors are usually treated with surgery, radiation, and chemotherapy.
In summary, typical and atypical carcinoid tumors are both types of NETs, but atypical carcinoid tumors are more aggressive and are associated with a higher risk of metastasis. Atypical carcinoid tumors also produce fewer hormones and require more aggressive treatments.