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Related Concept Videos

Tonsillitis I: Introduction01:30

Tonsillitis I: Introduction

Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat.
Etiology
Three primary contributing factors have been identified.
Tonsillitis II: Management01:26

Tonsillitis II: Management

This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity.
Chronic Pharyngitis01:23

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
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.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Streptococcal Pharyngitis01:27

Streptococcal Pharyngitis

Streptococcal pharyngitis, commonly known as “strep throat,” is an acute infection of the oropharyngeal tissues caused by the Gram‑positive Group A Streptococcus (Streptococcus pyogenes). Transmission occurs primarily through respiratory droplets expelled during coughing, sneezing, or talking.Mechanisms of Host Entry and Immune EvasionUpon entering the host, S. pyogenes adheres to the mucosal epithelial cells of the pharynx via surface proteins, notably lipoteichoic acid and the antiphagocytic...
Stages of Infection01:26

Stages of Infection

Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...

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Related Experiment Video

Updated: Jun 20, 2026

CO2-Lasertonsillotomy Under Local Anesthesia in Adults
05:07

CO2-Lasertonsillotomy Under Local Anesthesia in Adults

Published on: November 6, 2019

[From tonsillitis to coxitis].

Marjut Sarjomaa1, Kristin Vardheim Liyanarachi, Hanne Brekke

  • 1Medisinsk klinikk, Sykehuset Telemark, 3710 Skien, Norway. marjut.anneli.sarjomaa@sthf.no

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|September 17, 2009
PubMed
Summary
This summary is machine-generated.

Lemierre's Syndrome, a rare but serious infection caused by Fusobacterium necrophorum, can present initially as a throat infection. Prompt diagnosis and collaboration between clinicians and microbiologists are crucial for preventing severe complications.

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Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue
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Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils
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Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils

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Last Updated: Jun 20, 2026

CO2-Lasertonsillotomy Under Local Anesthesia in Adults
05:07

CO2-Lasertonsillotomy Under Local Anesthesia in Adults

Published on: November 6, 2019

Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue
07:38

Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue

Published on: June 14, 2020

Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils
08:09

Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils

Published on: November 16, 2015

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Clinical Medicine

Background:

  • Lemierre's Syndrome is a rare but potentially fatal condition often preceded by oropharyngeal infections.
  • Early symptoms can mimic common infections like mononucleosis or bacterial pneumonia, delaying diagnosis.

Observation:

  • A 19-year-old female presented with a throat infection, fever, and signs of lower respiratory tract infection.
  • Initial diagnosis considered mononucleosis with bacterial pneumonia.
  • Blood cultures revealed Fusobacterium necrophorum.

Findings:

  • The patient developed metastatic abscesses in the lungs and hip joint.
  • The final diagnosis was Lemierre's Syndrome.

Implications:

  • This case underscores the critical importance of Fusobacterium necrophorum identification in patients with severe pharyngitis or related symptoms.
  • Effective management necessitates strong collaboration between clinical teams and microbiology laboratories.
  • Timely diagnosis and treatment are vital to prevent severe morbidity and mortality associated with Lemierre's Syndrome.