Pleomorphic undifferentiated sarcoma

Malignant fibrous histiocytoma ( MFH ) is the most common malignant neoplasm of the connective tissue ( sarcoma) in adult humans. The peak age is 50-70 years and men are affected twice as often as women.

The most common sites are the extremities ( limbs) and the space behind the peritoneum ( retroperitoneal ). Most often, the tumor metastasized into the lung ( about 90%). The tumor impressed in the extremities than initially painless mass. You can also by prior irradiation or in the vicinity of foreign bodies (implants, projectiles ) may occur. A diagnosis is made by the pathologist after a biopsy or surgical removal of the tissue. The term malignant fibrous histiocytoma serves as a catch tray for all sarcomas that no differentiation ( rhabdomyosarcoma, leiomyosarcoma, liposarcoma, angiosarcoma, etc.. ) Have. The prognosis of malignant fibrous histiocytoma is a total bad.