title: The normal and abnormal development of the appendix. A radiographic assessment.
abstract: Radiographic examinations of the colon in the adult demonstrate a wide variety of contours of the interior cecal segment and appendix. These findings are a result of the normal developmental process of the appendix which can be arbitrarily separated into four stages. Examples of appendiceal development arrested at different stages, as well as variations of the normal adult appendix, are explained and illustrated. Forms of primitive development and lack of development (agenesis) are discussed.
mesh_terms: D001065:Appendix / Q000000981:diagnostic imaging / Q000196:embryology / Q000254:growth & development*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011859:Radiography