Pituitary disorders can cause a wide spectrum of symptoms, both hormonal and neurological, due to its location near the brain, the intracranial nerves and blood vessels and because of the vital hormonal control that the gland provides. Diagnosis of pituitary disease may be extremely difficult because it’s often confused with other disorders. It is dependent on symptoms, signs on examination, blood tests and MRI findings. Direct access to the pituitary can only be reached at surgery.

Surgery is a common treatment, and it is almost always successful IF performed by a skilled and specialized neurosurgeon. The smaller the tumor, the greater the chance the surgery will be successful. Large tumors that grow upward (into the nerves that mediate vision) or laterally (into the cavernous sinuses that contain the major arteries to the brain-the carotid arteries) increase the risk of surgery and are generally associated with a lower probability of cure. Early diagnosis and treatment is the key.

• Oxytocin stimulates contractions of the uterus during labor and the ejection of milk during breast-feeding.
• Antidiuretic Hormone (ADH) increases reabsorption of water into the blood by the kidneys and therefore decreases urine production. Also referred to as Vasopressin.

Anyone suffering from a constellation of complaints/clinical findings suspicious for pituitary disease should get blood and urinary hormone levels checked and, if indicated, a brain MRI, keeping in mind that microadenomas may not show up on the x-rays. Combinations of three or more of the following may suggest the possibility of a pituitary tumor: sexual dysfunction, depression, galactorrhea, infertility, growth problems, osteoporosis, obesity (specifically central), severe vision problems, easy bruising, aching joints, carpel tunnel syndrome, disrupted menses, early menopause, muscle weakness, fatigue.

We don’t know because funding for benign brain tumor research is virtually nonexistent. That’s about to change. In October 2002, Congress passed the Benign Brain Tumor Cancer Registries Amendment Act, which will force hospitals, clinics and doctors to report pituitary tumor incidence rates in the data collection of cancer registries. The problem remains diagnosis. No report of incidence rates is possible without it.

This is a complex and not completely understood area of pituitary medicine. Of course it is very logical and reasonable for anyone who has physical limitations, pain, discomfort to feel sad about a loss or change in their body functioning. Depression, which is different than sadness, is cited as a component of many chronic and/or serious physical illnesses. But pituitary disorders have a unique relationship with mental and emotional states. The chemistry of how such hormones as Prolactin and Cortisol act upon the brain is thought to either directly or indirectly causes psychological problems. There is also evidence linking emotional trauma, especially early in life, to later development of pituitary/Neuroendocrine disorders. Emotional factors are also known to affect the immune system. Thyroid hormones are also known to affect brain function and behavior and sensitive to environmental factors that cause stress. Therefore, a combination of stressful life events combined with a persons unique vulnerabilities and the powerful forces of certain hormones seem to commonly bring pituitary tumors and other Neuroendocrine disorders together with mental and emotional disturbances.

There may be permanent loss of some or all pituitary hormones, an imbalance that can be treated with Hormone Replacement Therapy, which has been inaccurately associated with only one group of patients: post-menopausal women. HRT can replace thyroid, growth, testosterone, or adrenal hormones when those made by the pituitary to stimulate the endocrine glands are no longer produced. It can be lifesaving therapy for the many millions of patients who need to replace hormones they no longer make.

A pituitary tumor is an abnormal growth of pituitary cells. Pituitary tumors can either be nonfunctional (that is they do not secrete hormones) or produce specific hormones, such as prolactin (causing infertility, decreased libido, and osteoporosis), growth hormone (causing acromegaly), ACTH (causing Cushing’s), TSH (causing hypothyroidism), or be nonfunctional (that is they do not produce hormones). These tumors behave according to their cell of origin and are named for the specific cell type affected. For example, if a tumor originates in a prolactin producing cell, the patient develops a prolactinoma-a prolactin secreting pituitary tumor that is common and usually treatable. High prolactin levels suppress production of the pituitary hormones (luteinizing hormone and follicle stimulating hormone) that stimulate production of estrogen or testosterone. Men with these tumors have low testosterone levels and lose their sex drive and eventually their masculine characteristics-hair, muscle, erections, and ability to produce sperm. Women with prolactin producing tumors often do not ovulate, experience low estrogen levels, and cease having menstrual periods. In both cases, patients with low sex hormones develop osteoporosis. It is important to remember that most pituitary tumors are benign and cancer is very rare. They have variable patterns of growth and affect different people in vastly different ways. Some are small and incidental, while others are small but cause hormone excess. Others may be rapidly growing mass lesions.

Tumors (overwhelmingly benign), inflammation, infections and injury can cause the gland to malfunction, as well as metastasis or spread of other tumors to the pituitary (rare). Radiation therapy to the brain can also cause normal pituitary cells to malfunction.

An imbalance occurs, leading to more than a dozen disorders of the endocrine system. Deficiency of thyroid hormone, adrenal cortical hormone (cortisol) or antidiuretic hormone (vasopressin) is rapidly life-threatening. In patients with abnormalities of the other hormones, quality of life is significantly compromised.