Aneurysmal benign fibrous histiocytoma is an uncommon pathologic variant of dermatofibroma. In addition to the features of a typical dermatofibroma, it has large cleft-like or cavernous blood-filled spaces with numerous hemosiderin pigments. It should be differentiated from angiomatoid malignant fibrous histiocytoma, malignant melanoma, and vascular tumors such as Kaposi's sarcoma and angiosarc...

Solitary fibrous tumour is an uncommon soft tissue tumour initially described in the pleural cavity. In the past decade, it has been described in various extrapleural sites, including the abdomen. Traditionally regarded as benign, cases of histologically or clinically malignant solitary fibrous tumours are rare. This report describes such a case, although the patient is still disease free five ...

PURPOSE 92 kDa matrix metalloproteinase-9 (MMP-9) is believed to play an important role in degrading the matrix and basement membrane, contributing to the invasion and metastasis of malignant solid tumors. However, little is known about its involvement in a malignant fibrous histiocytoma. The aim of this study was to investigate the expression of MMP-9 and to correlate its expression with clini...

BACKGROUND Solitary fibrous tumor is an uncommon soft tissue neoplasm with intermediate biological behavior, which rarely metastasizes. Malignant solitary fibrous tumor, although not clearly defined, is rarely described in the prostate. The present case is characterized by some peculiarities if compared with previously reported cases of prostatic malignant solitary fibrous tumor. Firstly, it do...

We report a case of malignant fibrous histiocytoma arising from the renal capsule. The tumor was found during screening ultrasonography. Surgical excision and adjuvant chemotherapy consisting of cyclophosphamide, vincristine, adriamycin and actinomycin D were performed. There has been no recurrence as of 2 years and 4 months after the operation. We reviewed the 5 other cases of malignant fibrou...

primary breast sarcoma is a rare disease of the breast that comprises a heterogeneous group of malignant mesenchymal neoplasms, including angiosarcoma, liposarcoma, leiomyosarcoma, fibrosarcoma, sarcomas with bone and cartilage, and malignant fibrous histiocytoma. yet the exact incidence of primary breast sarcoma has not been reported, but it approximately accounts for less than 1% of all breas...