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Published on: December 9, 2016
Primary pediatric endobronchial Ewing sarcoma family of tumors
Akira Hayakawa1, Satoshi Hirase, Natsuki Matsunoshita
1Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan.
Insights
We report a rare case of primary endobronchial Ewing sarcoma family of tumors in a child. This pediatric bronchial tumor highlights the importance of considering Ewing sarcoma in differential diagnoses.
Area of Science:
- Pediatric Oncology
- Thoracic Surgery
- Pathology
Background:
- Ewing sarcoma family of tumors (ESFT) is the second most common pediatric bone tumor.
- Extraosseous ESFT, arising in soft tissues, is rare.
- Primary endobronchial ESFT is exceptionally rare.
Purpose of the Study:
- To present a unique pediatric case of primary endobronchial ESFT.
- To discuss the diagnostic considerations for bronchial tumors in children.
- To highlight the rarity and clinical presentation of this condition.
Main Methods:
- A 12-year-old boy presented with dyspnea and right pulmonary atelectasis.
- Imaging revealed a tumor in the right main bronchus.
- Histopathological examination confirmed ESFT; the bronchus was deemed the primary site.
Main Results:
- The patient underwent tumor resection, chemotherapy, and radiotherapy.
- After 1 year and 6 months post-treatment, the patient remains disease-free.
- No other lesions were detected, supporting a primary endobronchial origin.
Conclusions:
- Primary endobronchial ESFT is an extremely rare entity.
- ESFT should be included in the differential diagnosis of pediatric bronchial tumors.
- This case underscores the importance of thorough evaluation for rare malignancies.
Background:
Ewing sarcoma family of tumors is the second most common primary bone tumor of childhood. Extraosseous Ewing sarcoma family of tumors is rare. We present a pediatric case of primary endobronchial Ewing sarcoma family of tumors.
Case Report:
A 12-year-old boy presented with dyspnea and chest radiography showed right pulmonary atelectasis. Chest computed tomography demonstrated tumor in the right main bronchus. Histopathological examination of the resected tumor demonstrated Ewing sarcoma family of tumors. No other lesions were detected throughout the body and the right main bronchus was thought to be the primary site. As of 1 year and 6 months after further resection of residual tumor followed by chemotherapy and radiotherapy, the patient remains disease-free.
Conclusions:
Extraosseous Ewing sarcoma family of tumors arises in soft tissues of the trunk or extremities, but primary endobronchial Ewing sarcoma family of tumors has rarely been reported. Although quite rare, Ewing sarcoma family of tumors should be considered among the differential diagnoses for pediatric bronchial tumor.
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