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The normal and abnormal development of the appendix. A radiographic assessment
Radiology
|December 1, 1976
Summary
Radiographic imaging reveals diverse adult cecal and appendix shapes due to normal appendix development across four stages. Variations and arrested development, including primitive forms and agenesis, are illustrated.
Area of Science:
- Radiology
- Anatomy
- Developmental Biology
Background:
- The colon's cecal segment and appendix exhibit varied contours in adult radiographic examinations.
- These variations are attributed to the normal developmental process of the appendix.
Purpose of the Study:
- To explain and illustrate the normal developmental stages of the human appendix.
- To discuss variations in adult appendiceal anatomy, including arrested development and agenesis.
Main Methods:
- Review of radiographic examinations of the adult colon and appendix.
- Illustration of different stages of appendiceal development.
- Discussion of developmental anomalies.
Main Results:
- The appendix develops through four distinct stages, leading to varied adult forms.
- Arrested development at different stages results in anatomical variations.
- Primitive developmental forms and complete lack of development (agenesis) are observed.
Conclusions:
- Understanding the normal developmental stages of the appendix is crucial for interpreting radiographic findings.
- Radiographic variations in the appendix are common and represent a spectrum of normal development and anomalies.