Related Experiment Video
Updated: Jan 22, 2026
04:23
A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images
Published on: April 21, 2023
2.3K
Thyroid Lymphoepithelial Cysts Mimicking Calcified or Solid Nodules on Ultrasonography
Yukie Tsutsuura1, Mitsuyoshi Hirokawa2, Ayana Suzuki1
1Kuma Hospital, Department of Clinical Laboratory, Kobe, Japan.
Ultrasound International Open
|July 6, 2019
Summary
Thyroid lymphoepithelial cysts (TLECs) often present atypical ultrasonography (US) findings, mimicking calcified or solid nodules. Awareness of these diverse US appearances is crucial for accurate diagnosis of these rare thyroid lesions.
Area of Science:
- Endocrinology
- Radiology
- Pathology
Background:
- Thyroid lymphoepithelial cysts (TLECs) are rare thyroid neoplasms.
- Detailed ultrasonography (US) findings for TLECs are not well-documented.
Purpose of the Study:
- To meticulously examine the US characteristics of 32 TLECs.
- To identify diagnostic challenges associated with TLECs on US.
Main Methods:
- Retrospective analysis of 32 TLECs resected from 21 patients.
- Review of pre-operative US reports and images.
- Correlation of US findings with histological examination.
Main Results:
- Four TLEC types identified: cystic (50%), mixed (12.5%), pseudo-solid (12.5%), and pseudo-calcified (25%).
- Pseudo-calcified TLECs were smallest (mean 7.1 mm).
- Histology revealed no calcification or intramural solid growth, despite US interpretations.
Conclusions:
- Approximately 50% of TLECs do not appear as simple cysts on US.
- TLECs can mimic calcified or solid nodules, posing diagnostic difficulties.
- Increased awareness of varied US presentations is necessary for TLEC diagnosis.
Related Concept Videos
01:17Ultrasonography
7.4K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
7.4K
02:37Metallic Solids
20.5K
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....
20.5K
02:22Structures of Solids
17.5K
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...
17.5K
01:20Ultrasound I: Abdominal Ultrasonography
1.5K
Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
1.5K
01:24Imaging Studies II: Ultrasonography
390
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
390
02:18Network Covalent Solids
16.1K
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...
16.1K