Related Experiment Video

Updated: Aug 2, 2026

Human Internal Mammary Artery (IMA) Transplantation and Stenting: A Human Model to Study the Development of In-Stent Restenosis
05:37

Human Internal Mammary Artery (IMA) Transplantation and Stenting: A Human Model to Study the Development of In-Stent Restenosis

Published on: May 9, 2012

Cystic medical necrosis of the internal thoracic artery

U Hake1, H P Dienes, M Hilker

  • 1Department of Cardiothoracic and Vascular Surgery, Johannes Gutenberg University, Mainz, Germany.

Scandinavian Journal of Thoracic and Cardiovascular Surgery
|January 1, 1996
PubMed

Insights

Cystic medial necrosis of the internal thoracic artery caused intramural hematomas, preventing its use as a coronary artery bypass graft. Alternative venous grafts provided a successful surgical outcome.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Pathology

Background:

  • Coronary artery bypass grafting (CABG) is a common surgical procedure.
  • The internal thoracic artery (ITA) is frequently used as an arterial graft in CABG.
  • Vascular graft patency and integrity are critical for successful outcomes.

Observation:

  • Multiple intramural hematomas were identified within an ITA intended for use as a free graft.
  • These hematomas significantly impeded blood flow through the artery.
  • The ITA was deemed unsuitable for use as a free graft due to the observed pathology.

Findings:

  • The underlying cause of the intramural hematomas was diagnosed as cystic medial necrosis of the internal thoracic artery.
  • Cystic medial necrosis is a degenerative condition affecting the arterial wall.
  • This condition compromised the structural integrity and function of the ITA.

Implications:

  • Cystic medial necrosis can render the internal thoracic artery unusable for coronary angioplasty.
  • Alternative grafting strategies, such as aorto-coronary venous bypass grafts, are essential when ITA is compromised.
  • Successful outcomes can be achieved with venous grafts, highlighting their importance in complex cardiovascular cases.

More Related Videos

Multimodality Diagnosis of Mesenteric Ischemia05:07

Multimodality Diagnosis of Mesenteric Ischemia

Published on: July 21, 2023

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm04:56

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm

Published on: August 1, 2025

Related Concept Videos

Thoracic Aorta01:15

Thoracic Aorta

The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
Angina II: Classification01:27

Angina II: Classification

Angina, also known as angina pectoris, is a chest pain resulting from diminished blood flow to the heart muscle and is often a symptom of coronary artery disease. Angina presents several variants with distinctive attributes, etiologies, and therapeutic approaches. The main types of angina include stable, unstable, variant (Prinzmetal's), microvascular, intractable, and silent ischemia.Stable angina is caused by atherosclerosis, which leads to the formation of plaques that narrow the coronary...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...