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Fibrosing Mediastinitis Caused by Histoplasmosis in an Adolescent
Madhusudan Ganigara1, John J Flores2, Jeremy Slivnick3
1Division of Cardiology, Department of Pediatrics, The University of Chicago, Chicago, Illinois, USA.
Abstract:
Fibrosing mediastinitis (FM) is a rare, potentially progressive disease resulting from an idiosyncratic immune response to a variety of stimuli that lead to fibrous infiltration of the mediastinum and possible narrowing of the bronchovascular structures. We report an unusual case of FM in a pediatric patient presenting as myopericarditis and progressing to pericardial thickening and encasement of the mediastinal vascular structures needing surgical intervention. Imaging, including transthoracic echocardiography, cardiac computed tomography, and cardiac magnetic resonance played a crucial role in the diagnosis, assessment, and follow-up. Contrast-enhanced computed tomography can be especially helpful to demonstrate potential findings associated with FM.
Insights
Fibrosing mediastinitis, a rare disease, can present unusually in children as myopericarditis. Advanced imaging is crucial for diagnosing and managing this progressive condition affecting the mediastinum.
Area of Science:
- Cardiology
- Pulmonology
- Pediatric Medicine
Background:
- Fibrosing mediastinitis (FM) is a rare condition characterized by excessive fibrous tissue growth in the mediastinum.
- It results from an abnormal immune response to various triggers, potentially causing airway and vascular obstruction.
Observation:
- This report details an atypical pediatric case of FM presenting initially as myopericarditis.
- The condition progressed to include pericardial thickening and encasement of mediastinal vascular structures, necessitating surgical intervention.
Findings:
- Multimodality imaging, including echocardiography, CT, and MRI, was vital for diagnosis and monitoring.
- Contrast-enhanced CT scans proved particularly useful in identifying characteristic FM findings.
Implications:
- This case highlights the importance of considering rare diagnoses like FM in pediatric patients with unexplained cardiac and mediastinal symptoms.
- Early and accurate diagnosis through advanced imaging is critical for timely management and improved outcomes in pediatric fibrosing mediastinitis.
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