The successful heterologous transplantation of several human tumors, including a breast carcinoma, a carcinoma of the colon, a melanotic sarcoma, and a fibrosarcoma, has been reported. Histologically, the appearance of the transplants of the carcinomata differed from that of the spontaneous tumors, but the directly observed growth of the transplanted fragments together with the presence of inva...

While carcinoma of breast is common condition, stromal sarcomas are rare tumors of breast, amongst which fibrosarcoma accounts for 16% of cases. Only a few case reports are available in the international literature. We report a case of fibrosarcoma of breast, which presented as an unencapsulated mass in the right breast of a 60-year-old female. This case was diagnosed after exclusion of all pos...

Ameloblastic fibrosarcoma (AFS) or ameloblastic sarcoma is an extremely rare odontogenic neoplasm. The authors report AFS in the maxillary sinus of a 4-month-old boy. The tumor was composed of odontogenic epithelium, resembling that of ameloblastoma, and a mesenchymal part exhibiting features of fibrosarcoma. We also found some areas with deposition of dentinoid material closely adjacent to the...

Skin and respiratory diseases, as well as tumours are the most frequently diagnosed diseases in pet rats. From among all the types of tumours found in this species of animals, fibrosarcoma is rarely observed. In this clinical case, a fast growth of fibrosarcoma and it is expansion in the left middle and inner ear led to a head tilt (torticollis) and facial nerve paralysis on the same side and w...

Malignant mesenchymoma is an interesting but very rare tumor in which malignant differentiation has occurred twice or more. We report a case of retroperitoneal malignant mesenchymoma consisting of osteosarcoma, leiomyosarcoma, liposarcoma and fibrosarcoma. Abdominal CT showed a large retroperitoneal mass with two separate and distinct parts, namely an area of prominent calcification and one of ...