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Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

26
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...
26
Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

28
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...
28
Tonsillitis I: Introduction01:30

Tonsillitis I: Introduction

421
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.
421

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Related Experiment Video

Updated: Aug 9, 2025

Implementation of a Permeable Membrane Insert-based Infection System to Study the Effects of Secreted Bacterial Toxins on Mammalian Host Cells
09:25

Implementation of a Permeable Membrane Insert-based Infection System to Study the Effects of Secreted Bacterial Toxins on Mammalian Host Cells

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Group A Streptococcus Necrotizing Lymphadenitis: A Case Report.

Nathalie De Paz1, Arian Pupo1, Lexi R Frankel2

  • 1Internal Medicine, Kendall Regional Medical Center, Kendall, USA.

Cureus
|February 16, 2023
PubMed
Summary
This summary is machine-generated.

Necrotizing lymphadenitis (NL), a rare condition, can be caused by Group A Streptococcus. This case highlights the importance of considering infectious causes in the differential diagnosis of NL.

Area of Science:

  • Medicine
  • Infectious Diseases
  • Pathology

Background:

  • Necrotizing lymphadenitis (NL) is a rare condition often presenting as cervical lymphadenopathy.
Keywords:
bacterial lymphadenitisgroup a streptococcusinfectious diseasenecrotizing lymphadenitispathologysystemic lupus erythematosus

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  • Most reported cases of NL occur in females, with a predilection for Japan.
  • The etiology of NL is typically non-infectious, making infectious causes unusual.