Related Experiment Video
Updated: May 9, 2025

The Arteriovenous AV Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering
Published on: November 2, 2016
A Unique Presentation of Focal Auricular Arteriovenous Malformation: from Embryology to Angiosome Theory
Itay Chen1,2,3, Milton Waner1,2, Kimberly Chan1,4
1Vascular Birthmark Institute of New York, New York, New York, USA.
Background:
Auricular arteriovenous malformations (AVMs) are rare vascular anomalies, being the second most prevalent after cheek AVMs. Their management presents challenges.
Objective:
We aim to explore the clinical presentation of ear AVMs, highlighting a unique pattern of focal auricular AVM.
Methods:
A retrospective review was conducted over 7 years, focusing on patients diagnosed with focal auricular AVMs. Exclusions included non-AVM diagnosis, adjacent anatomical site extensions, and lack of patient information or photos.
Results:
Twenty-two patients with auricular AVMs were identified, 13/22 with isolated focal AVMs, 8/13 females, 5/13 males, 5/13 with right ear involvement, and 8/13 with left ear involvement. A consistent presentation involving the upper 2/3 of the pinna while sparing the root of the helix/tragus/antitragus/concha and lobule was noticed.
Conclusion:
This study focuses on focal auricular AVMs, revealing a uniform pattern while sparing specific structures. Embryological evaluation, vascular supply analysis, and angiosome theory shed light on potential tissue layers as the nidus in those cases.
More Related Videos
Related Concept Videos
Mechanism of Angiogenesis
Development of Blood Vessels
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
Regulation of Angiogenesis and Blood Supply
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Development of the Heart
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart...
Overview of the Vascular System

