Related Experiment Videos
Mediastinal germ cell tumors in childhood. A clinical and pathological study of 21 cases
Insights
Complete surgical resection offers the best outcome for pediatric mediastinal germ cell tumors, particularly pure teratomas. Embryonal carcinoma requires aggressive multimodal therapy including surgery and chemotherapy for successful treatment.
Area of Science:
- Pediatric Oncology
- Surgical Oncology
- Germ Cell Tumors
Background:
- Primary mediastinal germ cell tumors are rare in children.
- This study reviews outcomes for pediatric patients treated over 54 years.
Purpose of the Study:
- To evaluate treatment outcomes for primary mediastinal germ cell tumors in pediatric patients.
- To identify prognostic factors and optimal treatment strategies.
Main Methods:
- Retrospective review of 21 pediatric patients treated at Children's Hospital, Boston.
- Classification of tumors as pure teratoma or embryonal carcinoma.
- Analysis of treatment modalities including surgery, chemotherapy, and radiation.
Main Results:
- Pure teratomas had excellent outcomes with complete surgical resection (10/12 alive).
- Embryonal carcinoma had poorer outcomes; only 2/9 achieved complete resection, with 2 alive after adjuvant therapy.
- Patients with embryonal carcinoma receiving only radiation/chemotherapy had high mortality.
Conclusions:
- Complete surgical resection is crucial for pure teratoma management.
- Aggressive multimodal therapy (surgery and chemotherapy) is essential for embryonal carcinoma.
- The role of radiation in primary treatment for these tumors requires further investigation.
Abstract:
Twenty-one patients aged 16 years or less had been treated for a primary mediastinal germ cell tumor at the Children's Hospital, Boston Massachusetts, during the last 54 years. There were 13 boys and eight girls with the average age at diagnosis being 7 years (range 2 weeks to 16 years). Twelve mediastinal germ cell tumors were classified as pure teratoma, five contained embryonal carcinoma admixed with other germ cell components, and four were pure embryonal carcinoma. Of 12 patients with pure teratoma, 10 underwent complete surgical resection and were alive and well 1 to 13 years later; two children left untreated died of complications related to local tumor growth. Complete surgical resection was possible for only two of nine patients with embryonal carcinoma; both received adjuvant therapy and were alive and well 3 and 20 years later. Seven patients received radiation and/or chemotherapy but died of residual or metastatic disease. Successful treatment for children with embryonal carcinoma requires an operation aimed at either debulking or complete resection (if possible) coupled with early and aggressive combination chemotherapy. The role of radiation in primary therapy remains undefined with regard to curative intent.