Adenoma is a benign tumor that occurs in glandular epithelial tissue. It can develop in various organs, such as the thyroid gland, adrenal glands, pituitary gland, intestines, ovaries and uterus or breasts.

What is an adenoma?

An adenoma is a benign tumor that forms in glandular epithelial cells – the cells that line the body's glandular structures and are responsible for producing hormones and secretions. Adenomas can develop in various organs, such as the thyroid gland, adrenal glands, pituitary gland, liver, mammary glands, and intestines. Although they are benign and usually do not spread to other body tissues, they can sometimes develop into malignant tumors or cause hormonal disorders.

The role of glands in the body

Glands are an important part of the human body that ensures the production of various hormones and secretions. These hormones regulate metabolism, growth, sexual development and other body functions. Glands can be endocrine, which secrete hormones directly into the blood, or exocrine, which secrete secretions such as sweat or saliva onto the body surface or into cavities. When an adenoma develops in a gland, it can affect the normal functioning of the gland, causing hormone overproduction or dysfunction.

Types of adenomas and their effects

Adenomas can develop in different organs of the body, and their health effects depend on where they are located. Some of the most common types of adenoma are:

• Thyroid adenoma: Formed in the thyroid gland and can cause excessive production of hormones that lead to hyperthyroidism. These are usually nodules that are seen during ultrasonography.
• Adrenal adenoma: these adenomas can produce excessive cortisol (a stress hormone that regulates metabolism and the immune system), aldosterone (controls blood pressure and fluid balance in the body) or the release of other hormones that cause hormonal disorders such as Cushing's syndrome (occurs due to excess production of cortisol and can cause weight gain, high blood pressure and weakness) or primary aldosteronism (causes excessive production of aldosterone, which can lead to hypertension and low potassium levels).
• Pituitary adenoma: Formed in the pituitary gland, which is responsible for regulating several hormones. They can cause symptoms related to excess or underproduction of hormones, such as acromegaly (excessive growth, especially of the bones of the hands, feet, and face) or galactorrhea (the release of milk from the breast outside of the breastfeeding period).
• Uterine adenoma (myoma): these adenomas form in the muscles of the uterus and can cause pressure on other pelvic organs, bleeding and pain.
• Ovarian adenoma: benign tumor(s) that form in the ovaries and can cause hormonal disturbances and changes in menstrual cycles.
• Breast adenoma: Forms in breast tissue and can be felt as nodules. Although benign, they can cause cancer concerns.
• Prostate adenoma (benign prostatic hyperplasia): develops in the prostate gland and can cause urination difficulties and discomfort, especially in older men.

Adenoma causes and risk factors

The causes of the development of adenomas are not fully understood, but several factors can increase the risk of their occurrence:

• Genetic predisposition: People with a family history of adenomas or other glandular disorders have a higher risk of developing an adenoma.
• Hormonal changes: Hormonal changes, such as menopause, can contribute to the development of adenomas, especially in the mammary or adrenal glands. During menopause, estrogen and progesterone levels decrease, which can cause hormonal imbalance and increase the risk of adenoma formation. Hormonal fluctuations can also contribute to the development of adenomas in other stages of life, such as during pregnancy or when using hormonal therapy. These hormonal changes can cause increased cell growth in the glandular tissue, which can result in the formation of benign tumors.
• Age: The risk of developing adenomas increases with age, as cell division and regeneration processes become less efficient. Cellular DNA mutations occur more frequently with age, which can contribute to uncontrolled cell growth and adenoma development. In addition, with age, the immune system weakens, which can reduce the body's ability to identify and destroy abnormal cells, thereby increasing the likelihood of adenoma formation.
• Lifestyle factors: unhealthy diet, smoking, excessive alcohol consumption and lack of physical activity can increase the risk of developing adenomas.
• Long-term hormone therapy: Long-term estrogen or other hormone therapy may increase the risk of developing adenomas, especially in women.

What are the symptoms of adenoma?

Adenoma symptoms depend on their location, size and hormone production capacity. Some of the most common symptoms include:

• Thyroid adenoma: increased lump in the neck, weight loss, increased heart rate, nervousness and increased sweating.
• Adrenal adenoma: high blood pressure, weight gain, muscle weakness, menstrual disorders and excessive body hair growth.
• Pituitary adenoma: headache, visual disturbances, breast milk discharge (females), growth disorders (acromegaly) and infertility.
• Colorectal adenoma: rectal bleeding, changes in stool, abdominal pain and intestinal obstruction.

If you notice these symptoms, it is important to consult a doctor to perform the necessary examinations.

Diagnosis of adenomas

Consider regular screening to detect adenomas early, especially after age 40.

Men would be advised to regularly check the level of prostate-specific antigen (PSA protein, which is secreted by the prostate gland, an increase in its level can indicate prostate enlargement, inflammation or the development of cancer). Therefore, men after the age of 40-50 are recommended to have a regular PSA level test to detect possible prostate problems early.

On the other hand, for women, breast ultrasonography, thyroid gland, uterus and ovary examinations should be performed.

Adenoma diagnosis includes several tests to determine the tumor's location, size, and potential impact on hormone production:

• Regular ultrasound examinations, especially for women over 40, can help detect changes in the thyroid or mammary glands early.
• Magnetic Resonance Imaging (MRI): MRI is an effective method for evaluating adenoma location and impact, especially in pituitary and adrenal adenomas.
• Computed Tomography (CT): Computed tomography is used to assess the size of the adenoma and possible spread to surrounding tissue.
• Blood tests: are used to measure hormone levels in the blood and determine whether an adenoma is causing excessive hormone production. In older people, regular blood tests can help identify hormonal disorders at an early stage, especially if there is a family history of endocrine problems. Depending on the type of adenoma, different markers can be tested:

  • TSH, T3 and T4 in thyroid adenoma;
  • cortisol, aldosterone and DHEA in adrenal adenoma;
  • prolactin, GH (growth hormone) or ACTH in pituitary adenoma.
• Biopsy: done to determine whether an adenoma is benign or malignant, especially in colorectal adenomas.

These tests help doctors accurately diagnose the adenoma and prescribe appropriate treatment.

What are the complications of adenoma?

Adenomas are usually benign, but they can cause several complications:

• Hormonal disorders: If the adenoma produces hormones, it can cause hormonal disorders such as hyperthyroidism, Cushing's syndrome or hyperprolactinemia.
• A malignant transformation: Some adenomas, such as colorectal adenomas, can develop into malignant tumors if not treated in time.
• Pressure on surrounding tissue: Large adenomas can put pressure on nearby organs and tissues, causing pain and impaired function, for example, pituitary adenomas can put pressure on the optic nerve, causing visual impairment.

Adenoma treatment and control

Adenoma treatment options include different methods depending on the type, size and location of the adenoma:

• Observation: In some cases, when the adenoma is small and does not cause symptoms, the doctor may choose to just observe it with regular examinations to evaluate its development and possible symptoms.
• Surgical treatment: Large adenomas or those causing symptoms or putting pressure on nearby organs may need to be surgically removed. Surgery may be especially necessary for pituitary, thyroid, or adrenal adenomas.
• Radiation therapy: In some cases, especially if the adenoma cannot be completely removed surgically or if it continues to grow, radiation therapy may be used to reduce the size of the tumor and prevent its further growth.

Adenoma prevention and lifestyle recommendations

Although it is not possible to completely prevent the development of an adenoma, there are some lifestyle factors that can help reduce the risk:

• Healthy diet: A diet rich in fresh vegetables, fruits, whole grains and protein can help reduce the risk of developing adenomas. Avoid excessive consumption of fat and sugar.
• Physical activity: Regular physical activity helps maintain a healthy body weight and improves metabolism, which can help reduce the risk of developing adenomas.
• Avoiding bad habits: Avoid smoking and excessive alcohol consumption, as these habits can contribute to the development of tumors.
• Regular check-ups: If there is a family history of adenomas or other glandular disorders, it is important to have regular health checks to detect possible changes early.

Life with an adenoma

Although adenomas are usually benign, living with the condition can be challenging, especially if the adenoma causes hormonal disturbances or other symptoms. It is important to keep in regular contact with your doctor and follow the recommended treatment plan. Regular tests and examinations will help control the development of the adenoma and prevent possible complications.

Conclusion

Adenoma is a benign tumor that can develop in various organs and cause various health problems. Early diagnosis and appropriate treatment are important to prevent complications and improve quality of life. Lifestyle adjustments, such as a healthy diet, regular physical activity, and reducing bad habits, can help reduce the risk of developing adenomas and improve overall health.

Additional resources

• Difficult Easy Diagnosis - Pituitary Adenoma (Source: Doctus)
• Una Gailiša: The thyroid gland and its diseases (Source: Arsts.lv)