Elastography detected solid organ stiffness increased in patients with acromegaly
Mehmet Bankir1, Hilmi Erdem Sumbul1, Ayse Selcan Koc2
1Department of Internal Medicine.
Medicine
|January 18, 2019
Summary
Solid organ stiffness (SOS) increases in active acromegaly patients. Insulin growth factor-1 (IGF-1) levels are independently linked to this increased stiffness, suggesting elastography as a valuable diagnostic tool.
Area of Science:
- Endocrinology and Medical Imaging
Background:
- Acromegaly is a disorder caused by excess growth hormone (GH) and insulin-like growth factor-1 (IGF-1).
- Elastography, a non-invasive ultrasound technique, measures solid organ stiffness (SOS), but its application in acromegaly is unexplored.
Purpose of the Study:
- To investigate changes in SOS in patients with acromegaly.
- To identify factors associated with SOS in acromegaly patients.
Main Methods:
- A comparative study involving 40 acromegaly patients and 40 healthy controls.
- Elastography was used to measure SOS in the liver, kidneys, and thyroid gland.
- Patients were categorized into control, remission, and active disease groups.
Main Results:
- Acromegaly patients, particularly those with active disease, exhibited significantly increased liver, kidney, and thyroid stiffness compared to controls and those in remission.
- Elevated Insulin growth factor-1 (IGF-1) levels were observed in active acromegaly patients.
- IGF-1 levels were identified as an independent determinant of SOS in acromegaly patients.
Conclusions:
- Increased SOS is a significant finding in active acromegaly.
- Elastography, combined with IGF-1 monitoring, can be a valuable addition to routine ultrasound examinations for acromegaly patients.
- Routine elastography screening is recommended for acromegaly patients, especially those with active disease.
Related Concept Videos
Metallic Solids
20.6K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.6K
Structures of Solids
17.7K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.7K
Molecular and Ionic Solids
20.0K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.0K
Network Covalent Solids
16.2K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
Increasing Function
391
An increasing function exhibits a rise in output values as input values increase. This behavior is depicted graphically as a curve or line that slopes upward from left to right. Such a function satisfies the condition that if x1 < x2, then f(x1) < f(x2), indicating that the function values grow with increasing inputs. This concept is fundamental in understanding growth trends across various domains, such as population dynamics, financial investments, or resource consumption.The...
391
Molecular Comparison of Gases, Liquids, and Solids
54.9K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
54.9K


