Related Experiment Video
Updated: Nov 11, 2025

Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue
Published on: June 14, 2020
Multisystem inflammatory syndrome in children (MIS-C) and retropharyngeal edema: A case series
Ariel Daube1, Scott Rickert2, Rebecca Pellett Madan3
1Division of Pediatric Critical Care, New York University Grossman School of Medicine, 424 East 34th Street, New York, NY, 10016, United States.
Abstract:
Multisystem inflammatory syndrome in children (MIS-C) is thought to follow SARS-CoV-2 infection and presents with fever and multisystem dysfunction. We report three children with suspected MIS-C found to have retropharyngeal edema without evidence of a bacterial etiology. We raise the possibility that an association between MIS-C and retropharyngeal edema exists.
Insights
Multisystem inflammatory syndrome in children (MIS-C) may be linked to retropharyngeal edema. This study observed three children with suspected MIS-C who presented with this swelling, ruling out bacterial causes.
Area of Science:
- Pediatric infectious diseases
- Viral pathogenesis
- Critical care medicine
Background:
- Multisystem inflammatory syndrome in children (MIS-C) is a serious condition following SARS-CoV-2 infection.
- MIS-C typically presents with fever and dysfunction across multiple organ systems.
- The precise clinical manifestations and diagnostic markers for MIS-C are still being elucidated.
Purpose of the Study:
- To investigate a potential association between MIS-C and retropharyngeal edema.
- To describe clinical findings in children with suspected MIS-C and retropharyngeal edema.
- To differentiate this presentation from bacterial etiologies.
Main Methods:
- Case series reporting on three children with suspected MIS-C.
- Clinical evaluation including assessment for retropharyngeal edema.
- Exclusion of bacterial infections as a cause for the observed symptoms.
Main Results:
- Three children with suspected MIS-C exhibited retropharyngeal edema.
- No evidence of bacterial infection was found in these cases.
- The findings suggest retropharyngeal edema as a possible, non-bacterial manifestation in MIS-C.
Conclusions:
- Retropharyngeal edema may be an underrecognized clinical sign in children with MIS-C.
- This finding warrants further investigation to confirm the association and understand its significance.
- Prompt recognition can aid in the diagnosis and management of MIS-C.
Related Concept Videos
Acute Pharyngitis
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:
Tonsillitis I: Introduction
Etiology
Three primary contributing factors have been identified.
Tonsillitis II: Management
Acute Pyelonephritis II: Diagnostic Studies and Management
Chronic Pharyngitis
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,...
Rheumatic Heart Disease I: Introduction

