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Related Concept Videos

Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
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Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Acute Pharyngitis01:30

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
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Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such as Proteus,...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
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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...

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Related Experiment Video

Updated: May 23, 2026

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess
03:44

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess

Published on: June 6, 2025

De novo subgaleal abscess.

J Schaefer1, L Clein, J Conly

  • 1Section of Infectious Diseases, Department of Medicine and Division of Neurosurgery, Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan.

The Canadian Journal of Infectious Diseases = Journal Canadien Des Maladies Infectieuses
|March 28, 2012
PubMed
Summary

This case study details a rare spontaneous subgaleal abscess caused by Streptococcus pyogenes. Prompt surgical intervention and antimicrobial therapy were crucial for successful management of this unusual scalp infection.

Keywords:
AbscessAponeurosisSpontaneousSubgaleal

Related Experiment Videos

Last Updated: May 23, 2026

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess
03:44

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess

Published on: June 6, 2025

Area of Science:

  • Infectious Diseases
  • Surgical Pathology
  • Dermatology

Background:

  • Subgaleal abscesses are uncommon, typically associated with trauma or surgical procedures.
  • Spontaneous formation without apparent cause is exceedingly rare in medical literature.

Observation:

  • A 62-year-old woman presented with rapidly worsening occipital scalp pain and swelling post-upper respiratory infection.
  • Radiological imaging and aspiration confirmed a subgaleal abscess with Streptococcus pyogenes.

Findings:

  • Initial medical and surgical management (incision, drainage, antibiotics) failed.
  • Operative exploration revealed extensive galea aponeurotica necrosis and osteomyelitis.

Implications:

  • This case highlights a unique presentation of subgaleal abscess, emphasizing the need for thorough evaluation in atypical cases.
  • Aggressive surgical debridement combined with prolonged antimicrobial therapy is essential for treating severe, spontaneous subgaleal abscesses and associated complications like osteomyelitis.