[A case of pleomorphic malignant fibrous histiocytoma with multiple lung metastases with bilateral pneumothorax after chemotherapy].

A 70-year-old man diagnosed with pleomorphic malignant fibrous histiocytoma of the left thigh underwent tumor resection. After 10 months, he underwent extended resection due to local recurrence. However, because multiple lung metastases was detected at this time, chemotherapy with ifosfamide and doxorubicin was administered.