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Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta

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Does appendiceal diameter change with age? A sonographic study.

Sarah M Coyne¹, Bin Zhang, Andrew T Trout

¹1 Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229.

AJR. American Journal of Roentgenology

|October 24, 2014

Summary

This summary is machine-generated.

Normal appendiceal diameter in children does not change with age on ultrasound, eliminating the need for age-specific diagnostic cutoffs. However, appendiceal wall thickness does vary with age.

Keywords:

age appendix normal diameter ultrasound

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Area of Science:

Pediatric Radiology
Diagnostic Ultrasound
Appendicitis Diagnosis

Background:

Appendiceal diameter and wall thickness are key indicators in diagnosing appendicitis.
Previous studies suggest age-related changes in the appendix, but their sonographic appearance in children is less understood.

Purpose of the Study:

To determine if age-related changes in appendiceal diameter are visible on ultrasound.
To assess the relationship between normal appendiceal diameter and patient factors like age, sex, and weight.

Main Methods:

Retrospective review of ultrasound examinations from 388 pediatric patients with normal appendixes.
Correlation of appendiceal diameter and wall thickness with patient age, sex, height, weight, and presence of enlarged lymph nodes.

Main Results:

Mean anteroposterior and transverse appendiceal diameters were 4.4 ± 0.9 mm and 5.1 ± 1.0 mm, respectively.
Appendiceal diameter showed normal distribution and was not significantly associated with age, but weight percentile was a predictor.
Appendiceal wall thickness was significantly associated with age, suggesting age-dependent diagnostic values may be needed.

Conclusions:

Normal appendiceal diameter on ultrasound in children is age-independent, negating the need for age-specific diagnostic cutoffs.
Appendiceal wall thickness, however, shows age-related changes, potentially requiring age-specific criteria for diagnosing appendicitis.
While weight and lymph nodes influence diameter, their clinical significance is minimal.