Pituitary Adenoma Specialists in Karnataka
A pituitary adenoma is a noncancerous tumour that develops in the pituitary gland, a small gland located at the base of the brain that produces and regulates ma…
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What is Pituitary Adenoma?
A pituitary adenoma is a noncancerous tumour that develops in the pituitary gland, a small gland located at the base of the brain that produces and regulates many of the body's essential hormones. Most pituitary adenomas are benign and grow slowly, but depending on their size and whether they produce excess hormones, they can cause a wide range of effects, from no symptoms at all when small and hormonally inactive, to significant hormonal imbalances or pressure-related symptoms when larger or hormone-producing. Functioning adenomas that secrete excess hormone can cause specific syndromes depending on which hormone is overproduced, such as excess growth hormone or cortisol, while larger tumours can press on surrounding structures including the nerves responsible for vision, causing visual disturbances. Many small, non-functioning adenomas are discovered incidentally on brain imaging performed for unrelated reasons and require only monitoring. Treatment, when needed, is guided by the tumour's size, hormonal activity, and any symptoms it is causing, with options including medication, surgery, or radiation therapy.
Moderate
Uncommon — a relatively frequent type of brain tumour overall, though the large majority are small and cause no significant symptoms
No
Causes of Pituitary Adenoma
The exact cause of most pituitary adenomas is unknown, though they arise from abnormal, uncontrolled growth of cells within the pituitary gland. A small proportion of cases are linked to inherited genetic syndromes that predispose to tumours in multiple endocrine glands. Unlike many other tumours, lifestyle factors are not known to significantly contribute to the development of pituitary adenomas.
Symptoms of Pituitary Adenoma
Headaches, visual disturbances particularly loss of peripheral vision, symptoms related to specific hormone excess such as unusual growth, weight changes, or irregular periods, fatigue, in hormone-deficient cases symptoms of underactive thyroid or adrenal glands, irregular or absent menstrual periods, unexpected breast milk production
Treatment & Types of Pituitary Adenoma in Karnataka
Treatment depends on the tumour's size, hormonal activity, and symptoms, with small, non-functioning adenomas often simply monitored with periodic imaging. Medications can effectively shrink or control hormone production in certain functioning adenomas, particularly those producing prolactin. Surgical removal, typically performed through the nose using minimally invasive techniques, is used for larger tumours, those causing visual problems, or those producing excess hormone not controlled by medication, with radiation therapy reserved for tumours that persist or recur after surgery.
Pituitary adenomas are classified as functioning, secreting excess of a specific hormone such as prolactin, growth hormone, or cortisol, each causing a distinct clinical syndrome, or non-functioning, not producing excess hormone and often discovered incidentally. They are also classified by size as microadenomas, under 1 cm, or macroadenomas, 1 cm or larger, with larger tumours more likely to press on surrounding structures like the optic nerves.
Endocrinology & Diabetology Specialists in Karnataka (0)
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Frequently Asked Questions
Is a pituitary adenoma cancerous?
No, the vast majority of pituitary adenomas are benign, noncancerous tumours; they can still cause significant effects through hormone overproduction or pressure on nearby structures, but they don't spread to other parts of the body like a malignant tumour would.
Will every pituitary adenoma need treatment?
No, small, non-functioning adenomas found incidentally are often simply monitored with periodic imaging, while larger tumours, those causing visual problems, or hormone-producing ones typically need medication, surgery, or radiation.
Can medication alone shrink a pituitary adenoma?
Yes, particularly for prolactin-producing adenomas, specific medications can effectively shrink the tumour and control excess hormone production, sometimes avoiding the need for surgery altogether.
How is a pituitary adenoma removed if surgery is needed?
Surgical removal is typically performed through the nose using minimally invasive techniques, which avoids the need for open brain surgery in most cases.
Why do some pituitary adenomas cause vision problems?
Larger tumours can grow upward and press on the nearby optic nerves that cross just above the pituitary gland, which is why visual disturbances, particularly loss of peripheral vision, are a recognized symptom of larger adenomas.