Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Introduction to Normal Distributions01:29

Introduction to Normal Distributions

90
Standardized test scores often follow a symmetric distribution that can be modeled with the normal distribution, a fundamental concept in statistics. This distribution is particularly useful for interpreting test performance fairly across populations, as it provides a mathematical framework for understanding variability and central tendency in large datasets.From Histogram to Frequency DistributionRaw test data are often displayed using histograms, where the height of each bar represents the...
90
Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

5.1K
Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
5.1K
Normal Distribution01:11

Normal Distribution

17.4K
The normal, a continuous distribution, is the most important of all the distributions. Its graph is a bell-shaped symmetrical curve, which is observed in almost all disciplines. Some of these include psychology, business, economics, the sciences, nursing, and, of course, mathematics. Some instructors may use the normal distribution to help determine students’ grades. Most IQ scores are normally distributed. Often real-estate prices fit a normal distribution. The normal distribution is...
17.4K
Normal Stress01:19

Normal Stress

1.5K
Normal stress is a type of stress that occurs when forces act perpendicular, or normal, to a material's cross-sectional area. This stress often arises in structures when subjected to axial loading, which is the application of force along the axis of an object. A practical example of this can be found in bridge truss members.
When a rod is under axial loading, the internal forces and corresponding stress are normal to the plane of the section, so it is termed normal stress. It's important to...
1.5K
Applications of Normal Distribution01:22

Applications of Normal Distribution

9.5K
The normal distribution is a useful statistical tool. One of its practical applications is determining the door height after considering the normal distribution of heights of persons, such that many can pass through it easily without striking their heads. The normal distribution can also determine the probability of a person having a height less than a specific height.
The heights of 15 to 18-year-old males from Chile from 1984 to 1985 followed a normal distribution. The mean height is 172.36...
9.5K
Normal and Shear Force01:14

Normal and Shear Force

3.4K
When a beam is subjected to different loads, such as weight, pressure, or other external forces, internal forces are generated within the beam. These forces can have a significant impact on the overall stability and strength of the structure. Engineers use various methods to analyze and determine the magnitude and direction of these internal forces. One common technique used to determine internal forces in beams is the method of sections. This method involves considering an imaginary point or...
3.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Disseminated Tuberculosis With Cavitary Lung Disease in a Very Preterm Infant.

Pediatrics·2026
Same author

Diagnostic performance of radiography and whole-spine MRI for detecting vertebral fractures in suspected child abuse.

Child abuse & neglect·2026
Same author

A Real World Analysis of Imaging Compared to Biopsy for Diagnosis of Pediatric Liver Tumors.

Pediatric gastroenterology, hepatology & nutrition·2026
Same author

Lack of clinical change in longitudinal vibration controlled transient elastography among children with cystic fibrosis and poor association with non-invasive biomarkers of liver disease.

Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society·2026
Same author

Impact of contrast agents on organ dosimetry in paediatric diagnostic fluoroscopy: the upper gastrointestinal series.

Physics in medicine and biology·2026
Same author

Impact of elexacaftor/tezacaftor/ivacaftor on biomarkers of cystic fibrosis hepatobiliary involvement in the PUSH study.

Journal of pediatric gastroenterology and nutrition·2025

Related Experiment Video

Updated: Feb 14, 2026

Laparoscopic Technique for Serial Collection of Liver and Mesenteric Lymph Nodes in Macaques
11:06

Laparoscopic Technique for Serial Collection of Liver and Mesenteric Lymph Nodes in Macaques

Published on: May 2, 2017

51.7K

Mesenteric lymph nodes in children: what is normal?

Boaz Karmazyn1, Elizabeth A Werner, Babak Rejaie

  • 1Department of Radiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.

Pediatric Radiology
|May 11, 2005
PubMed
Summary

Enlarged mesenteric lymph nodes (MLN) are common in children undergoing CT scans for other conditions. A short-axis diameter of 5-10 mm is often a non-specific finding, with 8 mm potentially representing the upper limit of normal.

More Related Videos

Murine Superficial Lymph Node Surgery
04:36

Murine Superficial Lymph Node Surgery

Published on: May 21, 2012

43.7K
Intravital Microscopy of the Inguinal Lymph Node
07:34

Intravital Microscopy of the Inguinal Lymph Node

Published on: April 4, 2011

21.0K

Related Experiment Videos

Last Updated: Feb 14, 2026

Laparoscopic Technique for Serial Collection of Liver and Mesenteric Lymph Nodes in Macaques
11:06

Laparoscopic Technique for Serial Collection of Liver and Mesenteric Lymph Nodes in Macaques

Published on: May 2, 2017

51.7K
Murine Superficial Lymph Node Surgery
04:36

Murine Superficial Lymph Node Surgery

Published on: May 21, 2012

43.7K
Intravital Microscopy of the Inguinal Lymph Node
07:34

Intravital Microscopy of the Inguinal Lymph Node

Published on: April 4, 2011

21.0K

Area of Science:

  • Pediatric Radiology
  • Abdominal Imaging
  • Lymphatic System Anatomy

Background:

  • Mesenteric lymphadenopathy (MLN) is often diagnosed in children with abdominal pain.
  • Enlarged MLN are frequently observed on abdominal CT scans.
  • The diagnostic criteria for MLN in children require further clarification.

Purpose of the Study:

  • To determine the prevalence of enlarged MLN (short axis ≥ 5 mm) in children with a low probability of mesenteric lymphadenopathy.
  • To evaluate the significance of enlarged MLN detected by abdominal CT in pediatric patients.
  • To establish reference ranges for normal mesenteric lymph node size in children.

Main Methods:

  • Retrospective review of non-contrast abdominal CT scans in 61 children.
  • Patients were selected for evaluation of suspected or known renal stones.
  • Two radiologists independently assessed MLN size (short-axis diameter) and location.

Main Results:

  • Enlarged MLN were detected in 54% of the children studied.
  • The majority of enlarged MLN were located in the right lower quadrant (RLQ).
  • A short-axis diameter of 5-10 mm was common, with 8 mm suggested as a potential upper limit of normal.

Conclusions:

  • Enlarged MLN (5-10 mm short-axis diameter) are a non-specific finding in children with low suspicion for lymphadenopathy.
  • A short-axis diameter of 8 mm may serve as a more refined upper limit for normal MLN size in pediatric patients.
  • Radiologists should consider these findings when interpreting abdominal CT scans in children.