Mice given injections of living methylcholanthrene-induced fibrosarcoma cells after the complete surgical removal of a growing, sensitizing tumor implant showed a strong immune resistance to the growth of the injected cells. If the sensitizing tumor was left in situ until 4 days after the challenge injection of tumor cells or if the tumor was killed with irradiation and left to regress, the imm...

A. Ferlito, MD, Department of Otolaryngology, University of Padua, Nuovo Policlinico, Via Giustiniani, 2, I-35100 Padua (Italy) Sarcomas originating in the larynx are extremely rare and form less than 1 % of all malignant laryngeal tumors. In the past, fibrosarcoma was considered as the most common malignant mesenchymal neoplasm in the larynx and it was generally held that at least half larynge...

Sclerosing epitheloid fibrosarcoma is a rare, histologically well-defined member of adult fibrosarcoma group of soft tissue tumors. Its main histological features are nests and cords of rounded tumor cells surrounded by hyalinized collagenous stroma. Epitheloid appearance with marked sclerosis and infiltrating growth pattern, along with occasional immunohistochemical positivity for epithelial m...

Histological examination of an invasive neoplasm from an 18-month-old female domestic shorthair cat revealed it to be a pleomorphic fibrosarcoma that ranged in microscopic appearance from well-differentiated collagenous connective tissue to anaplastic sarcomatous tissue that infiltrated surrounding musculature and skin. The fibrosarcoma was transmitted by whole cells or cell-free preparations t...

Figure 1. Dorsal view of left forearm infantile fibrosarcoma.

Fibromatosis encompasses a broad group of benign fibroblastic proliferations of similar microscopic appearance whose biologic behavior is intermediate between that of benign fibroblastic lesion and fibrosarcoma. Like fibrosarcoma, fibromatosis is characterized by infiltrative growth and frequent recurrences. But, unlike fibrosarcoma, fibromatosis never metastasizes. Fibromatosis can occur in va...

Fibrosarcoma of the paranasal sinuses is extremely rare pathology and there is limited report in the literature. We report synchronous presentation of maxillary sinus fibrosarcoma and gemistocytic astrocytoma which is, to our knowledge, unique in the literature. Both tumors metastases to other organ rarely and the metastatic spread of gemistocytic astrocytoma to fibrosarcoma or vice versa have ...

A primary fibrosarcoma of the breast is a rare tumor. Here we report on a case of a primary fibrosarcoma of the breast that presented as a palpable left breast mass in a 47-year-old woman. The physical examination revealed a 3 cm sized, round mass in the left upper outer breast. The mammograms revealed a 3 cm sized, partially circumscribed and partially obscured, high density mass in the upper ...

Mice given injections of living methylcholanthrene-induced fibrosarcoma cells after the complete surgical removal of a growing, sensitizing tumor implant showed a strong immune resistance to the growth of the injected cells. If the sensitizing tumor was left in situ until 4 days after the challenge injection of tumor cells or if the tumor was killed with irradiation and left to regress, the imm...

Ovarian carcinosarcoma composed of high-grade carcinoma and sarcoma is an extremely rare neoplasm typically occurs in postmenopausal women aged over 60 years. A 73-year-old female, gravida three para three, presented to our hospital with right lower abdominal pain. Right pelvic solid tumor ascites was detected on ultrasound examination. She underwent hysterectomy, bilateral salpingo-oophorectom...