Thursday, April 19, 2012

Causes of Acromegaly



Acromegaly happens when your body produces an excessive amount of growth hormone. The supply of the surplus hormone is sort of invariably your pituitary gland, atiny low bean-shaped structure at the bottom of your brain behind your nose. Growth hormone is one in all many hormones your pituitary gland produces.

Growth hormone plays a very important role in growth and regeneration of your bones and different tissues by stimulating your liver to supply another hormone known as insulin-like growth factor-I (IGF-I).

 
In adults, a tumor is that the most typical reason for excess growth hormone:

  • Pituitary tumors. Most cases of acromegaly are caused by a noncancerous (benign) tumor, or adenoma, of the pituitary gland. additionally to manufacturing excess growth hormone, these tumors will persist nearby tissues as they grow. This pressure will cause a number of the symptoms of acromegaly, like headaches and impaired vision.
  • Nonpituitary tumors. in a very few individuals, acromegaly is caused by benign or cancerous tumors in different components of the body, like the lungs, pancreas or adrenal glands. a number of these tumors truly secrete growth hormone. In different cases, they manufacture a hormone known as growth hormone-releasing hormone (GH-RH), that stimulates the pituitary gland to create a lot of growth hormone.

Symptoms of Acromegaly



AOne of the foremost common symptoms of acromegaly is enlarged hands and feet. you'll notice that your rings not work which your shoe size or width has increased. Joint and back pain are common.

Acromegaly may additionally  cause gradual changes within the form of your face, like a protruding lower jaw and brow, an enlarged nose, thickened lips, and

wider spacing between your teeth. as a result of acromegaly tends to progress slowly, symptoms might stay undetected for up to ten years. folks typically notice changes solely by comparing their current look to recent images.

 
Typical signs and symptoms of acromegaly include:
  • Enlarged hands and feet
  • Larger and broader countenance
  • Protrusion of the lower jaw therefore the lower teeth extend beyond the higher teeth (underbite)
  • Thickened, oily skin
  • Excessive sweating and body odor
  • Tiny skin outgrowths (skin tags)
  • Fatigue and muscle weakness
  • A deepened, husky voice as a result of enlarged vocal cords and sinuses
  • Severe snoring and frequent transient interruptions in nighttime respiration (sleep apnea) as a result of tissue swelling that blocks your higher airway
  • Impaired vision
  • Headaches
  • Enlarged tongue
  • Back pain
  • Pain and restricted mobility in joints
  • Menstrual cycle irregularities in girls
  • Reduced sex drive and, in men, bother achieving or maintaining an erection (erectile dysfunction)
  • Enlarged liver, heart, kidneys, spleen and alternative organs
  • Increased chest size (barrel chest)

When to envision a doctor
If you notice any long-term changes in your look or alternative symptoms you're thinking that could also be related to acromegaly, contact your doctor.

Acromegaly typically develops slowly, and even your members of the family might not initially notice the gradual physical changes that have occurred. Timely diagnosis is vital, though, in order that you'll receive correct care. Acromegaly will cause serious complications if it is not treated.

Acromegaly Disease



Acromegaly (ak-roh-MEG-uh-lee) may be a rare hormonal disorder that develops when your pituitary gland produces an excessive amount of growth hormone, nearly forever as a results of a noncancerous (benign) tumor. the surplus hormone causes swelling, skin thickening, tissue growth and bone enlargement, particularly in your face, hands and feet.

Acromegaly happens in adulthood, typically throughout middle age. In kids who are still growing, an excessive amount of growth hormone will cause a condition known as gigantism that ends up in an abnormal increase in height similarly as excess bone growth.

Because acromegaly is unusual and physical changes occur gradually, it typically is not recognized at once. though untreated acromegaly will result in serious illness and premature death, accessible treatments will scale back your risk of complications and considerably improve your symptoms.

Wednesday, April 18, 2012

Treatment of Acoustic neuroma



There are 3 choices for managing an acoustic neuroma: periodic monitoring, radiation and surgical removal.

Monitoring
If you have got alittle acoustic neuroma that won't growing or is growing slowly and causes few or no signs or symptoms, you and your doctor could arrange to monitor it, particularly if you are an older adult or otherwise not a decent candidate for treatment.

Your doctor could advocate that you just have regular imaging and hearing tests, sometimes each six to twelve months, to see whether or not the tumor is growing and the way quickly. If the scans show the tumor is growing or if the tumor causes progressive hearing loss or alternative difficulties, you'll got to endure treatment.

Stereotactic radiosurgery
Stereotactic radiosurgery, like gamma-knife radiosurgery, allows doctors to deliver radiation exactly to a tumor while not creating an incision. The doctor attaches a light-weight headframe to your numbed scalp. Using imaging scans, your doctor pinpoints the tumor and then plots where to use the radiation beams.

The purpose of radiosurgery is to prevent the expansion of a tumor. It's usually an possibility if you have got alittle tumor or if you are not a candidate for surgery. it's going to even be used for residual tumors — parts of a tumor that ancient brain surgery cannot take away while not damaging brain tissue.

It may take weeks, months or years before the results of radiosurgery become evident. Your doctor can monitor your progress with follow-up imaging studies and hearing tests. Risks of radiosurgery embody hearing loss, facial weakness and balance issues.

Surgical removal
There are many techniques for removing an acoustic neuroma, however normally the goal of surgery is to get rid of the tumor, preserve the facial nerve to stop facial paralysis and preserve hearing the maximum amount as doable. Performed throughout general anesthesia, surgery for an acoustic neuroma involves removing the tumor through the inner ear or through an incision in your skull. you'll got to keep within the hospital from four to 6 days when the surgery, and recovery could take six weeks or a lot of.

Surgery will produce complications, together with worsening of symptoms, if sure nerve or cranial structures are affected throughout the operation. These risks are usually primarily based on the dimensions of the tumor and therefore the surgical approach used:
  • Leakage of cerebrospinal fluid through the wound
  • Hearing loss
  • Facial weakness
  • Ringing within the ear
  • Balance issues
  • Persistent headache

Causes of Acoustic neuroma



The explanation for acoustic neuromas — tumors on the most nerve leading from your inner ear to your brain (vestibulocochlear nerve) — seems to be a malfunctioning gene on chromosome twenty two. Normally, this gene produces a protein that helps management the expansion of Schwann cells covering the nerves. What makes this gene malfunction is not clear. Scientists do understand the faulty gene is inherited in regarding the cases of neurofibromatosis two, a rare disorder that usually involves the expansion of tumors on the vestibulocochlear nerve on both sides of the top (bilateral neuromas).

Symptoms of Acoustic neuroma



The signs and symptoms of acoustic neuroma develop from the tumor pressing on the adjacent nerves, or nearby blood vessels or brain structures.

As the tumor grows, it should be additional probably to cause signs and symptoms, though tumor size does not perpetually verify effects. It's doable for alittle tumor to cause important signs and symptoms.

Signs and symptoms might include:
  • Hearing loss, typically gradual — though in some cases sudden — and occurring on only 1 aspect or additional pronounced on one aspect
  • Ringing (tinnitus) within the affected ear
  • Unsteadiness, loss of balance
  • Dizziness (vertigo)
  • Facial numbness and weakness

In rare cases, an acoustic neuroma might grow massive enough to compress the brainstem and be life-threatening.

When to ascertain your doctor
See your doctor if you notice any hearing loss, ringing in your ear, or bother along with your balance. Early diagnosis of an acoustic neuroma might facilitate keep the tumor from growing massive enough to cause serious consequences, like total hearing loss or a life-threatening buildup of fluid at intervals your skull.

Acoustic neuroma Disease



Acoustic neuroma could be a noncancerous (benign) and typically slow-growing tumor that develops on the most nerve leading from your inner ear to your brain. as a result of branches of this nerve directly influence your balance and hearing, pressure from an acoustic neuroma will cause hearing loss, ringing in your ear and unsteadiness.

Also called vestibular schwannoma, acoustic neuroma is an uncommon reason behind hearing loss. Acoustic neuroma generally grows slowly or not the least bit, however in an exceedingly few cases it should grow rapidly and become massive enough to press against the brain and interfere with very important functions.

Treatment choices for acoustic neuroma embrace regular monitoring, radiation and surgical removal.