0
ARTICLE |

Congenital Absence of the Vermiform Appendix

GEORGE H. PESTER, MD
Arch Surg. 1965;91(3):461-462. doi:10.1001/archsurg.1965.01320150091014.
Text Size: A A A
Published online

AGENESIS of the human appendix is a rare anatomic finding. Collins1 found 1 case in 104,066 appendectomies, or an incidence of 0.0009%. He found 60 cases had been reported in the world literature through 1950. Eleven cases have been reported since, and I am adding a 12th.

Embryology  All carnivora possess some type of cecal appendix, but the human vermiform appendix is found in comparable structure only in high anthropoid apes. No endocrine functions can be attributed to the human appendix.The cecum is derived from the distal branch of the primitive intestinal loop.2 There, at a short distance from the implantation of the vitelline duct, a dilatation appears on the free margin. This appears in the form of a diverticulum and represents the anlage of the cecal apparatus. This is found in the five-week embryo. This diverticulum becomes elongated and gradually assumes the shape of a funnel,

Topics

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
/>
First page PDF preview

Figures

Tables

References

Correspondence

CME
Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();