Primary mediastinal pleomorphic rhabdomyosarcoma: a case report.

Area of Science:

• Oncology
• Pathology

Background:

• Pleomorphic rhabdomyosarcoma is a rare soft tissue sarcoma.
• Mediastinal tumors can present with nonspecific symptoms like dyspnea.

Observation:

• A 34-year-old man presented with exertional dyspnea and a large mediastinal mass on CT scan.
• Initial diagnosis was germ cell tumor based on elevated alpha-fetoprotein (22,000 IU/L) and treated with bleomycin/etoposide/cisplatin.
• Subsequent biopsy confirmed pleomorphic rhabdomyosarcoma, a rare mediastinal malignancy.

Findings:

• The patient received chemotherapy (doxorubicin, etoposide, ifosfamide) without significant improvement.
• The inoperable tumor involved the entire right chest and mediastinum.
• Radiotherapy was not feasible due to the extensive tumor size.

Implications:

• This case highlights the diagnostic challenges of rare mediastinal tumors.
• It underscores the difficulties in managing advanced pleomorphic rhabdomyosarcoma.
• The case emphasizes the need for accurate diagnosis in guiding treatment strategies for rare cancers.