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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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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.
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Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
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Ultrasound I: Abdominal Ultrasonography01:20

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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...
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Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

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Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
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Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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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...
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Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

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Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
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Non-invasive Parenchymal, Vascular and Metabolic High-frequency Ultrasound and Photoacoustic Rat Deep Brain Imaging
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Ultrasound Imaging Features Associated With Neoplastic Gallbladder Polyps: A Systematic Review and Meta-Analysis.

Sunyoung Lee1, Won Chang2,3, Yeun-Yoon Kim4

  • 1Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.

Korean Journal of Radiology
|March 4, 2026
PubMed
Summary
This summary is machine-generated.

Eight ultrasound features, including size ≥10 mm and gallbladder wall thickening, significantly indicate neoplastic gallbladder polyps. These findings aid in differentiating benign from potentially malignant polyps for better patient management.

Keywords:
GallbladderMeta-analysisNeoplastic polypSystematic reviewUltrasound

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Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Oncology

Background:

  • Gallbladder polyps are common, with a subset being neoplastic and potentially malignant.
  • Accurate differentiation of neoplastic from non-neoplastic polyps via imaging is crucial but challenging.

Purpose of the Study:

  • To identify specific ultrasound (US) imaging features associated with neoplastic gallbladder polyps.
  • To improve diagnostic accuracy for gallbladder polyps.

Main Methods:

  • A meta-analysis of 30 studies involving 8,953 patients was conducted.
  • Bivariate random-effects models were used to assess diagnostic performance of US features.
  • Searched MEDLINE, EMBASE, Cochrane, and KoreaMed databases up to August 31, 2025.

Main Results:

  • Eight of nine evaluated US features were significantly associated with neoplastic polyps.
  • Key features include: size ≥10 mm, sessile morphology, single polyp, hypoechogenicity, gallbladder wall thickening (GBWT), and vascularity.
  • Size ≥10 mm had the highest pooled sensitivity (0.79), while hypoechogenicity had the highest pooled specificity (0.93).

Conclusions:

  • Several US imaging features are strongly linked to neoplastic gallbladder polyps.
  • These identified features can assist clinicians in managing gallbladder polyps more effectively.
  • Further research may refine diagnostic criteria for gallbladder polyps.