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Use and meaning of the anatomical terms plexus choroideus and tela choroidea in veterinary and human medicine

Maximilian Koellmberger1, Kirsti Witter1
·
Pubmed: 38567933
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  1. University of Veterinary Medicine (Vienna); Department of Biological Sciences and Pathobiology, Veterinärplatz 1, 1210 Vienna, Austria

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Ahead of Print
REVIEW ARTICLES
Submitted: 2024-01-05
Accepted: 2024-03-03
Published online: 2024-03-25

Abstract

The anatomical terms plexus chor(i)oideus (CP) and tela chor(i)oidea (TC) are listed without explanations in the official nomenclature handbooks Terminologia Neuroanatomica and Nomina Anatomica Veterinaria. Definitions of CP and TC exhibit discrepancies in medical dictionaries and anatomy handbooks. The aim of our study was to analyse this problem in detail and to discuss a possible unified use of the terms in science and teaching. We conducted a systematic literature review based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, identifying and analysing relevant scholarly articles. Additionally, comprehensive original handbooks on human and veterinary anatomy in English and other European languages were examined. The definitions of the terms CP and TC differed considerably between articles and did not match the most frequently given explanations in handbooks. In general use, it seems to have become accepted that TC represents the smooth, thin part of the roof of third and fourth ventricles, and CP the frond- or fringe-like vascularised structures invaginated into lateral, third and fourth ventricles. However, it is controversial which tissue layers should be included in their description. Etymologically, only the vascular network should be termed (choroid) plexus, but embryologically and functionally, epithelium, pial connective tissue and vascular network form an inseparable entity. Similarly, the smooth part of the ventricle roof consists of a (less) vascularised pia-derived stroma and lining epithelium. Including all these layers in CP as well as TC definition might be advisable and also corresponds to the use of the terms in clinical context.

Abstract

The anatomical terms plexus chor(i)oideus (CP) and tela chor(i)oidea (TC) are listed without explanations in the official nomenclature handbooks Terminologia Neuroanatomica and Nomina Anatomica Veterinaria. Definitions of CP and TC exhibit discrepancies in medical dictionaries and anatomy handbooks. The aim of our study was to analyse this problem in detail and to discuss a possible unified use of the terms in science and teaching. We conducted a systematic literature review based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, identifying and analysing relevant scholarly articles. Additionally, comprehensive original handbooks on human and veterinary anatomy in English and other European languages were examined. The definitions of the terms CP and TC differed considerably between articles and did not match the most frequently given explanations in handbooks. In general use, it seems to have become accepted that TC represents the smooth, thin part of the roof of third and fourth ventricles, and CP the frond- or fringe-like vascularised structures invaginated into lateral, third and fourth ventricles. However, it is controversial which tissue layers should be included in their description. Etymologically, only the vascular network should be termed (choroid) plexus, but embryologically and functionally, epithelium, pial connective tissue and vascular network form an inseparable entity. Similarly, the smooth part of the ventricle roof consists of a (less) vascularised pia-derived stroma and lining epithelium. Including all these layers in CP as well as TC definition might be advisable and also corresponds to the use of the terms in clinical context.

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Keywords

plexus choroideus; tela choroidea; terminology; nomenclature; choroid plexus; choroid membrane; systematic literature review; mammals

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Title

Use and meaning of the anatomical terms plexus choroideus and tela choroidea in veterinary and human medicine

Journal

Folia Morphologica

Issue

Ahead of Print

Article type

Review article

Published online

2024-03-25

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65

Article views/downloads

45

DOI

10.5603/fm.98803

Pubmed

38567933

Keywords

plexus choroideus
tela choroidea
terminology
nomenclature
choroid plexus
choroid membrane
systematic literature review
mammals

Authors

Maximilian Koellmberger
Kirsti Witter

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