Acromegaly - Causes, Symptoms and Treatments

Introduction:

Acromegaly is a clinical disorder seen when the body produces an excessive amount of growth hormones, which are produced from the pituitary gland. Acromegaly is often characterized by increased growth of the body functions associated with altered metabolic functions of the body. Various reasons can cause acromegaly, including an increase in growth hormone, an increase in growth hormone-releasing hormone, or externally administered growth hormone. Here, in the case of acromegaly, people associated with it often have features that resemble large facial bones with bigger jaws, a forehead appearing prominently, and feet and hands longer than usual. Hence, the distinction in these features makes it essential to understand the condition more.

What Causes Acromegaly?

Acromegaly is a clinical condition due to increased growth hormone levels for a long period. When a growth hormone in the blood is released, it sends a signal to the liver, triggering it to produce another growth factor resembling insulin called the IGF. This IGF hormone is the most predominantly responsible for the increase in the size of tissues and bones. When all these hormones are imbalanced, the body eventually accelerates the synthesis of blood sugar levels and fats, increasing blood pressure and sugar levels and affecting heart health.

This increase in pituitary hormone levels is usually associated with tumors in the pituitary gland, also known as pituitary adenoma. However, no data entails the triggering factor for this tumor. Other conditions that cause acromegaly, also known as non-pituitary tumors, are due to the location of tumors in certain parts of the brain, namely the pancreas, hypothalamus, lungs, chest, and abdomen.

How Commonly Is Acromegaly Seen?

Acromegaly is a very rare clinical condition; according to the facts, three to fourteen out of 100,000 people are commonly diagnosed. The condition is commonly seen in people in middle age, around 40 to 45 years, but symptoms are also seen in any age group. An increase in growth below puberty in children is known as gigantism, which shows the fusion of bones leading to the appearance of an enormous size.

How Is Acromegaly Clinically Seen?

The clinical features of acromegaly include:

• The size of the hands and feet has increased, and the size of the shoes and rings has increased abnormally.

• The facial features become prominent, and the lips, tongue, and nose become larger. The facial bones, including the jaws, keep increasing, leading to a space between the teeth and the nasal bridge.

• The skin appears to be thicker, coarse, and more oily.

• Patients show a deep, hoarse voice, profuse sweating, and body odor.

• Vision problems are seen.

• The appearance of skin tags is more prominent.

What Are the Ways to Diagnose Acromegaly?

The tests used for diagnosing acromegaly include:

Blood Tests: The blood samples are taken from the patient to assess the value of growth hormones in the blood or released into the system. These tests include:

1. IGF (Insulin-Like Growth Factor) Levels: As discussed earlier, IGF is an insulin hormone in acromegaly. This hormone is seen in larger quantities in the bloodstream; blood is drawn and studied in the laboratory to assess its levels.

2. Glucose Tolerance Test: This test is also known as the random blood sugar test. It involves collecting blood samples of fasting and postprandial blood sugar and testing by drawing blood before and after food intake.

Imaging Tests: The imaging tests commonly done are:

1. Magnetic Resonance Imaging (MRI): This is done to view the size and position of the pituitary gland using radio waves, which help analyze the soft tissues and organs present in the body.

2. Computed Tomography (CT): In cases where MRI alone is not helpful, computed tomography is necessary. This gives us a three-dimensional thorough view of the gland and tumor in case they need to be located. It also helps in planning the treatment outcome.

How Is Acromegaly Treated?

Acromegaly can be treated in two ways, and they are:

1. Medical Management: Medical management includes using medications and radiation therapy to reduce the tumor size. It also aims to stabilize the blood sugar levels and to restore normal function and health.

2. Surgical Management: This mainly aims to remove the tumor that causes an increase in GH levels. To achieve this, there are two kinds of surgical procedures are done and they are:

• Microscopic Surgical Procedure: Here, the surgery is done with the help of magnifying loops or instruments, but the surgery is performed outside, and the structure of the tumor is removed.

• Endoscopic Procedure: In endodontic procedures, smaller instruments with tiny cameras are inserted into the area of interest to remove the tumor.

Although both procedures show a success rate, technique-sensitive surgery requires image-guided assistance, such as MRI or CT.

What Are the Complications of Acromegaly?

Although acromegaly is treatable in most cases, there are still many complications associated with it, as these associated complications can arise before diagnosing the condition or after treating it. The medical conditions commonly associated with it are type 2 diabetes mellitus, increase in blood sugar levels, any disease related to the heart, sleep apnea, inflammation of the bone and bony joints, carpal tunnel syndrome - elongation of the bones of feet and hands, and other complications associated with muscles and bones. So, the complications associated with acromegaly include:

• Formation of polyp-like structure in the colon, which, when left unattended, can eventually lead to the development of cancer.

• Also, as growth hormone levels increase, it can accelerate the growth of other hormones.

• In certain cases, when acromegaly is not left untreated, it can even lead to death.

Conclusion:

Acromegaly is an uncommon hormonal imbalance characterized by progressive extension of the extremities, facial characteristics, joint pain, and organ enlargement. Without timely treatment, acromegaly can have major drawbacks such as hypertension, cardiomyopathy, diabetes mellitus, and respiratory issues, lowering quality of life and shortening life expectancy. Early detection, biochemical testing of GH and IGF-1 levels, and imaging studies are all essential for the best treatment. Continuous monitoring and personalized treatment techniques are essential to manage disease progression, relieve symptoms, and decrease consequences, underlining the importance of increasing awareness and early intervention in acromegaly.