About Wermer's Syndrome (Multiple Endocrine Neoplasia, Type 1)
MEN1 is passed down from a person’s parents, meaning it is inherited. If a person inherits one changed gene from a parent, they have a 50% chance of developing it.
Risk factors for MEN1 which increases the chances of developing the disease includes:
- Family history: If you have a parent or sibling with MEN1, you have a higher risk of developing the disease.
It's important to understand that, while MEN1 is an inherited condition, not everyone with a family history will develop the syndrome. Having the changed MEN1 gene raises the risk, but other factors may also affect whether someone develops the condition.
Symptoms of MEN1 include:
- Kidney stones: Hard, painful mineral deposits that can form in the kidneys, leading to pain and discomfort, especially in the lower back or side.
- Thinning of bones (osteoporosis): Bones become weaker and more likely to break.
- Nausea and vomiting: Feeling sick to your stomach or throwing up, often because of extra hormones made by tumors.
- High blood pressure (hypertension): Hormones can cause blood pressure to rise, which puts extra stain on the heart problems.
- Weakness and fatigue: Feeling very tired, weak, or low in energy, making it harder to do daily activities.
Other symptoms may happen because of tumors in other glands or organs. These symptoms vary depending on the type of tumor and what hormones are being released. Symptoms that may occur include:
- Pituitary gland tumors: These tumors can cause headaches, hormonal problems, vision problems if they press on the optic chiasm (an area of the brain that affects vision), and other symptoms because of the extra release of hormones.
- Pancreatic tumors: Tumors in the pancreas can lead to low blood sugar levels, stomach (abdominal) pain, vomiting, diarrhea, and other digestive issues.
- Adrenal gland tumors: Tumors in the adrenal glands can cause hormone problems and may lead to high blood pressure.
- Other endocrine gland tumors: MEN1 can also affect other glands, including the thymus (involved in immune function), gland, bronchial tubes (airways in the lungs), and different tissues, such as fibrous or fat tissue. The symptoms depend on the specific gland affected.
It's important to note that symptoms can vary depending on the location and how severe the tumor growth is. If you experience any of these symptoms, it is recommended to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.
To diagnose MEN1, healthcare providers commonly perform the following exams, tests, and procedures:
- Physical exam: This exam helps the healthcare provider gather information to see if there may be signs of MEN1 and decide if further testing is needed. Signs may include:
- Pain or tenderness in certain areas
- Swelling, especially in the neck (due to possible thyroid or parathyroid tumors)
- Signs of kidney stones, such as back or side pain
- Any lumps or masses in the abdomen, which could suggest growths in the pancreas or other glands
- Lab tests:
- Blood tests: These can help find hormone levels that may be too high, such as calcium, parathyroid hormone (PTH), and other hormones related to the pituitary or adrenal glands. Higher than normal levels can be a sign of MEN1.
- Genetic testing: Genetic tests check for changes in the MEN1 gene. This testing looks at chromosomes, which are structures inside cells that carry DNA, the material holding genetic instructions. Finding changes in the MEN1 gene can confirm the diagnosis and determine if a person may develop MEN1 or pass it on to their children.
- Imaging studies: Imaging tests like X-rays or MRIs may be recommended to get detailed images of the body. These scans can help find any unusual growths or tumors in the endocrine glands commonly affected by MEN1, such as the parathyroid, pituitary, or pancreas.
- Clinical procedures: Additional tests may be recommended based on symptoms. These might include:
- Bone density scan: To check bone health, as high calcium levels can lead to bone thinning
- Abdominal ultrasound: To check for tumors in the pancreas or adrenal glands
- Blood pressure checks: To find high blood pressure, which can result from adrenal gland tumors
- Vision tests: In cases where pituitary tumors may affect vision by pressing on nearby eye nerves
To better understand the stage or severity of MEN1, additional exams, tests, and procedures may be recommended. These can include:
- Detailed imaging scans: CT or PET scans take detailed pictures of the body. This helps doctors see the size and location of tumors and check if they have spread. This gives important information for them to decide on treatment.
- Biopsy: This test involves taking a small piece of tissue from a tumor or growth to look at under a microscope to check if it’s cancerous.
- Hormone level tests: These blood tests check the levels of different hormones in the body. Since MEN1 can affect hormone-producing glands, these tests help find any hormone problems and guide treatment plans.
It's important to follow up with your healthcare provider if any symptoms worsen or change after these exams, tests, and procedures. They will be able to provide advice based on your specific situation.
The main goals of treating MEN1 are to help control symptoms and address the different issues caused by the condition. Here are the treatments and how they work:
Medications:
- Medication therapy: This involves using medications to lower the extra release of hormones from pituitary tumors linked to MEN1. These medications can help keep hormone levels steady and ease symptoms. In some cases, this treatment can successfully lower hormone production and shrink the size of the tumor.
- Molecular targeted agents: For hormone producing tumors in the pancreas related to MEN1, known as pancreatic neuroendocrine tumors (pNETs), that have spread or cannot be surgically removed, other treatments may be recommended:
- Somatostatin receptor ligands: This type of medicine attaches to specific parts of the tumor cells, slowing down or stopping them from making extra hormones. This can help lower symptoms and control the growth of tumors.
- Peptide receptor radionuclide therapy (PRRT): A drug with a small amount of radioactive material targets specific cells in the tumor. The radioactive drug binds to these cells, giving radiation directly to the tumor to help shrink or control it.
- Chemotherapy: Uses strong medicines to kill cancer cells.
- Other symptom medications:
- Anti-ulcer (acid lowering) medication may be use for people with gastrinoma, a condition that causes the stomach to make too much acid.
Medical procedures:
- Surgical removal: For patients with primary hyperparathyroidism (PHPT) related to MEN1, removing the affected parathyroid glands is the recommended treatment. The surgery helps balance calcium levels in the blood.
- Less-than-subtotal parathyroidectomy (LPX): This option, which involves removing part of the parathyroid glands, may lower the risk of long-term problems after surgery and improve daily health for some patients.
- Radiation therapy: If the entire tumor can’t be removed with surgery, radiation therapy may be used as another option. It uses powerful beams to destroy cancer cells or stop them from growing.
Lifestyle changes:
- Regular check-ups and health tracking: People with MEN1 should have regular doctor visits and screenings to keep track of hormone levels, any changes in tumor growth, and their overall health.
- Genetic testing: Testing is often recommended for people with MEN1 and their family members. This test can check for genetic changes passed down in the family, which helps show the risk of developing related tumors. Knowing this information can help guide decisions about screening and treatments.
Other treatments may be recommended based on which hormone-producing glands are affected by MEN1. Talk with a healthcare provider who specializes in treating MEN1. They can create a treatment plan based on your specific needs and health situation.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.
The way MEN1 develops over time can be different for each person, but some common signs and issues tend to appear with this condition. Over time, people with MEN1 may experience the following complications:
- Primary hyperparathyroidism (PHPT): This is often one of the first signs of MEN1. It involves the development of non-cancerous tumors (adenomas) in the parathyroid glands, which control calcium levels in the body. PHPT can cause high levels of calcium in the blood, leading to symptoms such as feeling tired, kidney stones, and bone loss.
- Pituitary adenomas: These are tumors that grow in the pituitary gland, a small gland in the brain that makes hormones to control different functions in the body. Pituitary adenomas can cause hormone-related issues and lead to symptoms such as headaches, vision problems, and low hormone levels.
- Gastroenteropancreatic neuroendocrine tumors (GEP-NETs): These are tumors that can develop in the pancreas and the digestive system. They are often diagnosed at a younger age, and diagnosis usually happens by chance and may appear in several areas. These tumors can cause symptoms such as stomach pain, diarrhea, and hormone related issues.
- Other tumors: In some cases, MEN1 may also be linked to tumors in other hormone-producing organs such as the adrenal glands, thymus, lungs, stomach, as well as non-hormone-producing tissues like the skin, brain and spinal cord.
Other common problems related to MEN1 include:
- Hormonal problems: Tumors in glands that make hormones can cause hormone changes, affecting different body functions.
- Vision changes: Tumors near the pituitary gland can press on nerves, which may cause vision problems.
- Stomach and digestive issues: Tumors in the pancreas of digestive system can lead to stomach pain, diarrhea, and other digestive issues.
- Higher cancer risk: Although most tumors in MEN1 are not cancer, there is a higher chance of developing cancerous tumors in some cases.
It's important to know that while there are treatments available for MEN1, there is currently no cure for this genetic condition. This is why early detection and regular check-ups are important for keeping the condition under control and improving health. If you think you have symptoms related to MEN1 or have a family history of this condition, it's important to talk with a healthcare professional who can offer guidance and recommendations based on your specific needs.