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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

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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...
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Necrosis01:16

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Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
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Aneurysm I: Introduction01:30

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Rheumatic Heart Disease I: Introduction01:23

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Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
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Myocarditis II: Clinical Features and Diagnostic Tests01:27

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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Noninfectious Necrotizing Aortitis With Predominantly Neutrophilic Infiltrate.

Nathan A Williams1, Mark Colantonio2, Anastasia Miller1

  • 1Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA, umaryland.edu.

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Summary
This summary is machine-generated.

Noninfectious aortitis is not well understood. This case report shows that a neutrophilic infiltrate in ascending aortic aneurysms does not always mean infection, challenging typical diagnostic assumptions.

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Area of Science:

  • Cardiovascular Medicine
  • Pathology
  • Rheumatology

Background:

  • Aortitis, inflammation of the aorta, can be infectious or noninfectious.
  • Noninfectious aortitis remains poorly understood, presenting diagnostic challenges.
  • Ascending aortic aneurysms require accurate etiological diagnosis.

Purpose of the Study:

  • To present a case of noninfectious ascending aortitis.
  • To highlight the histopathological findings in a unique case.
  • To challenge the assumption that neutrophilic infiltrates indicate infection.

Main Methods:

  • Case report of a previously healthy young man with ascending aortic aneurysm.
  • Histopathological examination of aortic tissue.
  • Microbiological investigations to rule out infection.

Main Results:

  • Histopathology revealed a predominantly neutrophilic infiltrate.
  • No inciting microorganism was identified.
  • The patient's presentation was consistent with noninfectious aortitis.

Conclusions:

  • Neutrophilic infiltrates in ascending aortic aneurysms do not exclusively indicate an infectious etiology.
  • This case underscores the importance of considering noninfectious causes even with neutrophilic inflammation.
  • Further research is needed to elucidate the mechanisms of noninfectious aortitis.