Surgery and Proton Beam Therapy for Mediastinal Extraskeletal Osteosarcoma

Area of Science:

• Oncology
• Radiotherapy
• Surgical Oncology

Background:

• Extraskeletal osteosarcoma (ESOS) is a rare malignant neoplasm.
• Mediastinal ESOS presents a significant clinical challenge due to its rarity and poor prognosis.

Observation:

• A 73-year-old male presented with hoarseness.
• Imaging revealed a large, calcified tumor in the median mediastinum.

Findings:

• Surgical debulking was performed, achieving partial resection of the mediastinal ESOS.
• Postoperative proton beam therapy was administered to the residual tumor.
• The patient remained disease-free for 29 months post-treatment.

Implications:

• This case highlights the potential efficacy of a combined surgical and proton therapy approach for mediastinal ESOS.
• Successful management of rare tumors like mediastinal ESOS can be achieved with multimodal treatment strategies.
• Further research into proton therapy for rare thoracic malignancies is warranted.