What is a pituitary tumor?

Written by Chen Yu Fei
Neurosurgery
Updated on September 10, 2024
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Pituitary tumors refer to a type of benign tumor that occurs at the site of the pituitary fossa. Generally, they grow relatively slowly. In the early stages of the disease, there are usually no obvious symptoms or signs. Some patients may occasionally feel mild headaches or dizziness, which most can tolerate. As the size of the pituitary tumor gradually increases, it often affects the surrounding critical tissues, nerves, and organs, primarily impacting pituitary function, thereby leading to pituitary hypofunction. This affects the secretion of endocrine hormones in the body, causing abnormal secretion of endocrine hormones, and resulting in a series of symptoms and signs. For example, male patients may experience abnormalities in the secretion of male hormones, leading to difficulties with erection, while female patients are likely to experience menstrual disorders and irregular menstruation.

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Written by Chen Yu Fei
Neurosurgery
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Are pituitary tumors prone to recurrence?

Pituitary tumors in the brain are benign tumors that grow slowly. When the tumor size is relatively small, there are generally no clear symptoms or signs, and most patients can work, live, and study like normal people. It is recommended to treat pituitary tumors with surgical methods. Most pituitary tumors are benign. If they can be completely removed through microscopic surgery, or through the transnasal transsphenoidal approach, minimally invasive surgery can achieve ideal treatment results and generally will not recur. However, for individual patients with pituitary tumors, if the tumor is malignant, it may easily adhere to surrounding tissues in the early stages, making it difficult to completely remove surgically, thus it is prone to recurrence.

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Written by Chen Yu Fei
Neurosurgery
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The difference between pituitary tumors and pituitary adenomas

The difference between a pituitary tumor and a pituitary adenoma mainly lies in the extent of the affected tissue involved. Generally, pituitary tumors may have a broader range than pituitary adenomas, meaning that pituitary tumors include pituitary adenomas. Normally, a pituitary adenoma specifically refers to tumors occurring in the anterior lobe of the pituitary gland, as this lobe primarily consists of glandular tissue. Meanwhile, the posterior lobe of the pituitary is mainly neurohypophysis. Therefore, tumors typically referred to as pituitary adenomas occur in the anterior lobe. If a tumor is in the posterior lobe, it cannot be called a pituitary adenoma, but it still falls under the category of pituitary tumors.

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Written by Chen Yu Fei
Neurosurgery
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Is pituitary tumor surgery dangerous?

For patients with pituitary tumors, undergoing pituitary tumor surgery carries certain risks. The main risks are due to the important blood vessels, nerves, and various crucial structures around the pituitary tumor. Careless maneuvers during the surgery may damage these important organs or affect the surrounding crucial blood vessels, leading to potentially fatal massive bleeding. Additionally, some common surgical risks may also exist, such as anesthesia accidents, postoperative intracranial infections, cerebrospinal fluid rhinorrhea, and other conditions. Therefore, for pituitary tumor patients, it is necessary to prepare thoroughly for the surgery and make a comprehensive assessment of the patient's overall condition before the procedure.

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Written by Chen Yu Fei
Neurosurgery
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What is a pituitary tumor?

Pituitary tumors refer to a type of benign tumor that occurs at the site of the pituitary fossa. Generally, they grow relatively slowly. In the early stages of the disease, there are usually no obvious symptoms or signs. Some patients may occasionally feel mild headaches or dizziness, which most can tolerate. As the size of the pituitary tumor gradually increases, it often affects the surrounding critical tissues, nerves, and organs, primarily impacting pituitary function, thereby leading to pituitary hypofunction. This affects the secretion of endocrine hormones in the body, causing abnormal secretion of endocrine hormones, and resulting in a series of symptoms and signs. For example, male patients may experience abnormalities in the secretion of male hormones, leading to difficulties with erection, while female patients are likely to experience menstrual disorders and irregular menstruation.

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home-news-image
Written by Chen Yu Fei
Neurosurgery
59sec home-news-image

How to check for pituitary tumors?

For the examination of pituitary tumors, it can be conducted jointly through various methods such as inquiring about the patient's medical history based on symptoms and signs, as well as conducting endocrine and radiological examinations. Currently, with the continuous advancement in modern endocrinology, the use of endocrine radiology immunodiagnostic methods allows for the direct measurement of various hormones from the pituitary and hypothalamus, and functional tests of the pituitary can be performed. This helps in understanding whether there is hyperfunction in the pituitary and target organs, and provides an effective evaluation of early diagnosis of pituitary tumors, changes before and after treatment, and treatment efficacy, which is of significant importance. Additionally, judgments can also be made jointly through various methods such as cranial CT, cranial MRI, and enhanced MRI scanning of the pituitary gland.