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Updated: Aug 2, 2026

Teratoma Generation in the Testis Capsule
Published on: November 7, 2011
Infected teratoma of lower posterior mediastinum in a six-year-old boy
A H Sidani1, R Oberson, G Délèze
1Department of Radiology, Hôpital Régional de Sion, Switzerland.
Abstract:
A six-year old boy presented with prolonged unexplained fever caused by an infected teratoma of the lower posterior mediastinum. Modern imaging, combining ultrasonography with computed tomography, enabled the correct diagnosis of topography, extension and nature of this rare lesion to be made and explained the clinical features. Follow-up CT showed regression of the abscess after antibiotics thus permitting elective surgery.
Insights
An infected teratoma in a child caused prolonged fever. Advanced imaging diagnosed the rare mediastinal tumor, and CT scans confirmed abscess regression after antibiotic treatment, enabling surgery.
Area of Science:
- Pediatric Oncology
- Diagnostic Imaging
Background:
- Mediastinal teratomas are rare germ cell tumors.
- Infection of teratomas can present with non-specific symptoms like prolonged fever.
Observation:
- A six-year-old boy presented with persistent unexplained fever.
- The fever was attributed to an infected teratoma in the lower posterior mediastinum.
Findings:
- Combined ultrasonography and computed tomography (CT) accurately diagnosed the teratoma's location, extent, and nature.
- Follow-up CT scans demonstrated significant regression of the abscess following antibiotic therapy.
Implications:
- Multimodality imaging is crucial for diagnosing rare pediatric mediastinal masses.
- Antibiotic treatment can effectively manage teratoma-associated abscesses, facilitating subsequent surgical management.

